Maamingidae
Mabellina
Macaca
Macarangela
Maccabaeidae
Macedonitherium(EXTINCT)
Macfieia
Machadoembia
Machadoini
Machadoites
Machadotermes
Machaerites
Machaerodes
Machaeromeryx(EXTINCT)
Machaerotidae
Machairima papua
Machaya
Macheiramphus(incertae sedis)
Machilidae
Machiloidea
Machomyrma dispar
Mackenziella psocoides
Mackinlayaceae
Macracanthopus
M-costalis
M-schoutedeni
M-seydeli
Macralymma
Macroagelaius
Macrobunus
Macrocatinius brachycephalus(EXTINCT)
Macrocentrinae
Macrocephalon maleo(Maleo)
Macrocerca
Macrochaeteumatidae
Macrochaetus
Macrochironidae
Macrocnema
M-nicobaricaCarlgren 1928
Macrococcus
Macrocyphon
Macrocyprididae
Macrocystidiaceae
Macrodactyla
Macrodanuria elongata
Macrodascillus
Macrodasyida
M-e
Macrodelphus
Macrodicax
Macrodictya(EXTINCT)
Macrodipteryx(Standard-winged Nightjar and Pennant-winged Nightjar)
M-longipennis(Standard-winged Nightjar)
M-vexillarius(Pennant-winged Nightjar)
Macrogerodonia
Macroglossinae
Macrognathellus
Macrognathotermes
Macrogynoplax
Macrogyrus
Macrohelodes
Macrolepidoptera
Macroleter(EXTINCT)
Macrolister(~16 species)
'Macrolobieae' clade
Macromantis
M-hyalina
M-nicaraguae
M-ovalifolia
M-saussurei
Macromusonia
M-conspersa
M-major
Macropanesthia
Macrophthalmodites
Macrophyllodromia
Macroplectus
Macropogon
Macropopa lobata
Macropsalis forcipata(Long-trained Nightjar)
Macropsyllidae
Macroraffrayia
Macrorhinotermes
Macroscelidea(elephant shrews)
Macrosemiiformes(EXTINCT) (Mesozoic fossils)
Macrosiphina
Macrosiphini
Macrosphenus(longbills)
Macrostomida
Macrosubulitermes
Macrotermes
Macrotermitinae(Fungus-growing termites)
Macrotermophila
Macrotoxenus
Macrotrachela
Macrotrichurus
Macroturellus
Macrotyphlus
Macroveliidae(macroveliid shore bugs)
Macroxyelinae
Macruromys
Macta
Maculatoscelis
M-ascalaphoides
M-gilloni
M-maculata
Macuxitermes
Madabaxyris
Madagascarentomon
Madagascaridia
Madagassoconnus
Madagaster
Madagastrini
Madapelmus elongatus
Madara
Madecapaederus
Madecassophryne
Madecatheta
Madecazyras
Madecosorius
Madecusa
Madegassochara
Madegassosorius
Madeirostiba
Madera(EXTINCT)
Maderentulus
Madontalgus
Madoqua(dik-diks)
M-guentheri(Günther's dik-dik)
M-kirkii(Kirk's dik-dik)
M-piacentinii(silver dik-dik)
M-saltiana(Salt's dik-dik)
Madrasorites
Madrepora
Maeota
Maesaceae
Maevia
M-agapeta
M-albizonata
M-atricapilla
M-auricapilla
M-coeruleostriata
M-debilis
Maevia expansa
M-gemmans
M-gracilipes
Maevia hobbsae
Maevia inclemens
Maevia intermedia
M-latrunculata
M-luteocincta
M-luzonica
M-margaritacea
M-metallica
M-micans
Maevia michelsoni
M-monacha
M-nigrifrontis
M-nuda
M-paula
M-pavo
M-persecta
Maevia poultoni
M-psittacina
M-quadrilineata
M-rhinoceros
M-roseolimbata
M-scalaris
M-simoni
M-susiformis
M-trilineata
Mafagaa talhouki
Magdelainella
M-(Knirschiella)
M-(Magdelainella)
MagnapinnidaeVecchione and Young, 1998
Magnetobacterium
Magneuptychia
M-agnata
M-alcinoe
M-analis
M-divergens
M-drymo
M-francisca
M-fugitiva
M-gera
M-gomezi
M-harpyia
M-inani
M-iris
M-lea
M-libye
M-metagera
M-mimas
M-moderata
M-modesta
M-mycalesis
M-nebulosa
M-newtoni
M-ocnus
M-ocypete
M-opima
M-pallema
M-probata
M-segesta
M-tiessa
M-tricolor
Magnoliaceae(magnolias and tulip trees)
Magnoliales
Mago
M-acutidens
M-angustichelis
M-australis
M-barbatus
M-dentichelis
M-fasciatus
M-fonsecai
M-fulvitorax
M-intentus
M-longidens
M-opiparis
M-procax
M-saperda
M-silvae
M-steindachneri
M-vicanus
Maharadja
Mahavana
Mahesia
Maindroniidae
Majanga
M-basilaris
M-spinosa
M-tricolor
Majangella
M-carli
M-moultoni
Majellula
Makapania(EXTINCT)
Makara
Makrakanthakneme
Malaccina
Malacobdellidae
Malacolepadidae
Malacomys
Malaconotinae(bush-shrikes)
Malacopsyllidae
Malacorhynchus membranaceus(Pink-eared Duck)
Malacosporea(Malacovalvulida)
Malacostraca
Malagasitermes
Malagassinae
Malagasy tenrecs
Malaiseium
Malaisomedon
Malala
Malamatidia
Malapteruridae
Malayanomedon
Malayanota
Malayaxenos
M-kitaoka
M-trapezonoti
Malaybergius
Malayinthus
Malayloeblius
Malaysiocapritermes
Malaysiotermes
Malaza
M-carmides
M-empyreus
M-fastuosus
Malcidae
Malena
Malenka
Malesherbiaceae
Malgasipaussus
Malimbosa
Malkaridae
Malkinella
Mallanganee
Mallecoa
Malleecola
Malleoceps
Mallika
Mallodrya
Mallomys
Mallotoblatta
Malmelater priscus(EXTINCT)
Maloides
Malpighiaceae(Barbados cherry family)
Malpighiales
Malthomethes
Malthopsis
Maluridae(fairy wrens and emu wrens)
/Malvadendrina
Malvales
/Malvatheca
/Malvoideae
Mammalia
Mammalodontidae(EXTINCT)
Mammia(EXTINCT) (incertae sedis)
Mammuthus(EXTINCT) (Mammoths)
M-columbi(EXTINCT) (Columbian mammoth)
M-exilis(EXTINCT) (pygmy mammoth)
M-jeffersonii(EXTINCT) (Jefferson's mammoth)
M-lamarmorae(EXTINCT) (Sardinian dwarf mammoth)
M-meridionalis(EXTINCT)
M-primigenius(EXTINCT) (woolly mammoth)
Mammutidae(EXTINCT) (mastodons)
Manataria
Manda
Mandarinia
Mandera
Mandersia
Mandrillus
Manerebia
M-apiculata
M-benigni
M-cyclopella
M-cyclopina
M-cyclops
M-diffusa
M-franciscae
M-germaniae
M-golondrina
M-haywardi
M-ignilineata
M-indirena
M-insulsa
M-interrupta
M-leaena
M-levana
M-lisa
M-magnifica
M-mammuthus
M-mycalesoides
M-navarrae
M-nevadensis
M-pervaga
M-pluviosa
M-prattorum
M-quinterae
M-reducta
M-rubescens
M-rufanalis
M-satura
M-seducta
M-staudingeri
M-trimaculata
M-trirufa
M-typhlops
M-undulata
M-zoippus
Mangalobythus
Manica
M-bradleyi
M-hunteri
M-invidia
M-parasitica
M-rubida
M-yessensis
Manicanopaussus
Manidae
Manikaella
Manilla
Maninae
Maniola
M-chia
M-halicarnassus
M-jurtina
M-megala
M-nurag
M-telmessia
Maniolina
Maniraptora
Manis (Manis) crassicaudata
Manis (Manis) pentadactyla(Chinese pangolin)
Manis (Paramanis) javanica
Manis (Phataginus) tricuspis(African tree pangolin)
Manis (Smutsia) gigantea(giant pangolin)
Manis (Smutsia) temminckii(Cape pangolin)
Manis (Uromanis) tetradactyla(Four-toed pangolin)
Manjala
Mannerheimia
Manniconnus
Mannophryne
Mantasoa
M-lebbei
M-macula
Mantella
Mantellias pubicornis
Mantellinae
Manticorini
Mantidactylus
Mantidae(non-monophyletic)
Mantilia ehrmanni
Mantillica
M-beieri
M-nigricans
M-sialidea
Mantinae(non-monophyletic)
Mantini
Mantipus
Mantis
M-beieri
M-indica
M-insignis
M-macrocephala
M-octospilota
M-religiosa
Mantisatta(Old World)
M-longicauda
M-trucidans
Mantispidae
Mantodea(mantids)
Mantoida
M-argentinae
M-brunneriana
M-fulgidipennis
M-luteola
M-maya
M-nitida
M-ronderosi
M-schraderi
M-tenuis
Mantophasma zephyra
Mantophasmatidae
Mantophasmatodea
Mantridae
Manueliini
Maoriblatta
Maorinus
Maoripamborus
Maoristolus
Maorothiini
Maraca
Marantaceae
Marasmiaceae
Marattiales
Maratus
Marcgraviaceae
Marchantiomorpha(liverworts)
Marchena
Mardivirus
Mareeba
Marela
M-tamyris
M-tamyroides
Marellia(incertae sedis)
Marellus
Marengo
Maretina
Maretiola
Margarinotus(~100 species)
Margaris
Margarodidae(giant coccids, ground pearls)
Margaromma
Margaroperdix madagascariensis(Madagascar Partridge)
Margattea
Margatteoidea
Margattina
Marginitermes
Marginocephalia
Margonia
Marinibacillus
Marinilabilia
Marinilactibacillus
Marinithermus
Marinitoga
Marinococcus
Mariobezzinae
Mariposa Group
Marmaronetta angustirostris(Marbled Duck)
Marmoricola
Marmota(marmots and woodchuck)
M-baibacina(gray or Altai marmot)
M-bobak(bobac or steppe marmot)
M-broweri(Alaska or Brower's marmot)
M-caligata(hoary marmot)
M-camtschatica(black-capped marmot)
M-caudata(long-tailed or red marmot)
M-flaviventris(yellow-bellied marmot)
M-himalyana(Himalayan marmot)
M-marmota(alpine marmot)
M-menzbieri(Menzbier's marmot)
M-monax(woodchuck or groundhog)
M-olympus(Olympic marmot) (incertae sedis)
M-sibirica(tarbagan or Mongolian marmot)
M-vancouverensis(Vancouver Island marmot)
Marmotini(marmots, ground squirrels, and prairie-dogs)
Marnaviridae
Marofusiger
Maroniella
Marpesia
M-berania
M-chiron
M-corinna
M-corita
M-crethon
M-egina
M-eleuchea
M-furcula
M-harmonia
M-livius
M-marcella
M-merops
M-orsilochus
M-petreus
M-themistocles
M-tutelina
M-zerynthia
Marpissa
M-agricola
M-anusuae
M-arenaria
M-armifera
M-bina
M-broadwayi
M-bryantae
M-canestrini
M-capensis
M-cineracca
M-civilis
M-decorata
M-dentoides
M-dybowskii
M-elata
M-elongata
M-formosa
M-grata
M-hieroglyphica
M-hiroseae
M-ibarakiensis
M-kalapani
M-leptochira
M-leuocphaea
M-lineata
M-longiuscula
M-magister
M-magna Kishida
M-magna Pkm
M-marina
M-memorabilis
M-milleri
M-minor
M-muscosa
M-mystacina
M-nanodes
M-nemoralis
M-nivoyi
M-nobilis
M-nutanae
M-obscura
M-obtusa
M-pikei
M-pomatia
M-prathamae
M-pulchra
M-pulla
M-radiata
M-raimondii
M-ridens
M-robusta
M-rubriceps
M-singhi
M-soricina
M-stuhlmanni
M-tigrina
M-tikaderi
M-wallacei
Marsileaceae
Marsupialia(opossums, kangaroos, etc.)
Marsyas
Martella
Marthamea
Martialia
Martinius
Martus
Martyniaceae
Martynovia(EXTINCT)
Martynoviidae
Maschwitzia
Mashuna
M-mashuna
M-upemba
Masillabune(EXTINCT)
Masirana
Masoninae
Masoreini
Massospondylus(EXTINCT)
Massuria
Mastacideidae
Mastacina
Mastacomys
Mastadenovirus
Mastax
Mastigerina
Mastiginae
Mastigini
Mastigophorophyllidae
MastigoteuthidaeVerrill, 1881
Mastigus
Mastinocerus
Mastinomorphus
Mastinowittmerus
Mastira
Mastixia
Mastixioids
Mastomys
Mastopsenius
Mastotermes
M-anglicus(EXTINCT) (Middle Oligocene of England)
M-bournemouthensis(EXTINCT) (Upper Eocene of England)
M-croaticus(EXTINCT) (Lower Miocene of Croatia)
M-darwiniensis(Giant Northern termite of Northern Australia)
M-electrodominicus(EXTINCT) (Lower Miocene amber of the Dominican Republic)
M-electromexicus(EXTINCT) (Upper Oligocene amber of Chiapas, Mexico)
M-gallica(EXTINCT) (Lower Oligocene of France)
M-haidingeri(EXTINCT) (Lower Miocene of Croatia)
M-heerii(EXTINCT) (Upper Oligocene of Poland) (incertae sedis)
M-minor(EXTINCT) (Lower Miocene of Croatia)
M-picardi(EXTINCT) (Upper Oligocene of France)
Mastotermites stuttgartensis(EXTINCT) (Middle Miocene of Germany) (incertae sedis)
Mastotermitidae(Giant Northern termite of Australia and extinct relatives)
Mastrevirus
Masuriini
Masynteinae
Matabelina
Matahepialus
Matapa
M-aria
M-celsina
M-cresta
M-deprivata
M-druna
M-intermedia
M-purpurascens
M-sasivarna
Mataris
Mateuellus troglobioticus
Mathania
M-[n. sp.]
M-agasicles
M-aureomaculata
M-carrizoi
M-leucothea
Matheteus
Matidia
Matoniaceae
Matropium
Maurachelia
Mauritecia
Maxomys
May belong in Beata:
Maya
Mayatyphlus
Maydena
Mayermys
Mayetia
M-(Mayetia)
M-(Metamayetia)
M-(Promayetia)
Mayetiini
Mayomyzon(EXTINCT)
Mayottella
Mayriella
M-abstinens
M-hackeri
M-spinosior
M-transfuga
M-venustula
Mazama(brockets) (monophyly uncertain)
M-americana(red brocket )
M-bricenii(Merioa brocket)
M-chunyi(dwarf brocket)
M-gouazoupira(gray brocket)
M-nana(pygmy brocket)
M-rufina(little red brocket)
Mazia
Mazonopterum(EXTINCT)
Mazothairos(EXTINCT)
Mcclungia
Mcluckiepteron(EXTINCT) (incertae sedis)
Meandriina
Meandrosmilia(EXTINCT)
Mecampsis
Mecaphesa
Mechanicus
Mechanitina
Mechanitis
M-lysimnia
M-mazaeus
M-menapis
M-polymnia
Mecicobothriidae
Mecistocephalidae(Placodesmata)
Mecistostethus(incertae sedis)
Mecochelia
Meconematinae(Long-legged katydids)
Mecopodinae(Long-legged katydids)
Mecoptera(scorpionflies, hangingflies) (monophyly uncertain)
Mecrona
Mecynoceridae
Mecynognathus
Mecynoptera(EXTINCT) (incertae sedis)
Mecynostomata(EXTINCT) (Mecynostomatidae)
Mecynostomites(EXTINCT) (incertae sedis)
Mecynozethus
Mecysmaucheniidae
Medera
Medeterusa
Medhiama
Mediastinia
Medisorina
Medocostidae
Medome
Medomonista
Medon
M-(Cryptoporus)
M-(Medon)
M-(Medonodonta)
M-(Mespalerus)
M-(Nitimedon)
M-(Platymedon)
M-(Tetramedon)
Medonina
Medostilicus
Medullosaceae(EXTINCT)
Medusa palliataBohadsch 1761
Medusagynaceae
Meenoplidae
Megabatrus
Megabostrychus
Megacalanidae
Megacamelus(EXTINCT)
Megacephalini
Megaceroides(EXTINCT)
Megaceros
Megaceryle
Megachilidae(leafcutter bees)
Megachilinae
Megachiroptera(Old World Fruit Bats)
Megacormus
Megacrex inepta(Papuan Flightless Rail)
Megadermatidae(False Vampire bats)
Megadromus
Megagnathotermes
Megagraphydrus
Megalactis
M-griffithsiiSaville Kent 1893
M-hemprichiiEhrenberg 1834
Megaladapis edwardsi(EXTINCT)
Megaladapis grandidieri(EXTINCT)
Megaladapis madagascariensis(EXTINCT)
Megalapteryx(EXTINCT)
Megaleas
Megalechis
M-personata
M-thoracata
MegaleledoneTaki, 1961
Megaleuctra
Megalinus
Megaloblatta
Megalocarpus
Megalocephalus lineolatus(EXTINCT)
Megalocephalus pachycephalus(EXTINCT)
Megaloceros(EXTINCT)
Megalochoerus(EXTINCT)
Megalocraerus(1 species, probably Exosternini) (incertae sedis)
MegalocranchiaPfeffer, 1884
M-fisheri
M-maxima
M-oceanica
M-sp. A
Megalocytivirus
Megalograptidae(EXTINCT)
Megalograptoidea
Megalomina
Megalomus
Megalomyrmex
M-acauna
Megalomys(West Indian rice rats)
Megalonychidae(two-toed sloths)
Megalopaederus
MegalopalpusAfrican Harvesters
M-angulosus
M-metaleucus
M-simplex
M-zymna
Megalopaussus
Megalopidaetarpon
Megalopodidae
Megalopsidiinae
Megaloptera(alderflies, dobsonflies, and fishflies)
Megalopygidae(flannel moths)
Megaloscapa
Megalotriton(EXTINCT)0(incertae sedis)
Megalotylidae
Megalovis(EXTINCT)
Megaluridae(grassbirds)
Megalyroidea
Megamareta
Megamblyopinus
Megamerinidae
Megamonas
Megamorio
M-basilewskyi
M-camerunus
M-congoensis
M-feai
M-gabonicus
M-mniszechii
Megamuntiacus vuquangensis(giant muntjac)
Meganomiidae
Megaoryzomys(EXTINCT) (Galapagos giant rat)
Megaparaglossa
Megaphotina sichotensis(EXTINCT) (Oligocene, Primorye Pozharskiy, Russian Far East)
Megapodiidae(Megapodes)
Megapodius
M-bernsteinii(Sula Megapode)
M-cumingii(Philippine Megapode)
M-decollatus(New Guinea Megapode)
M-eremita(Melanesian Megapode)
M-forstenii(Forsten's Megapode)
M-freycinet(Dusky Megapode)
M-geelvinkianus(Biak Megapode)
M-laperouse(Micronesian Megapode)
M-layardi(Vanuatu Megapode)
M-nicobariensis(Nicobar Megapode)
M-pritchardii(Tongan Megapode)
M-reinwardt(Scrubfowl)
M-tenimberensis(Tanimbar Megapode)
Megapontiidae
Megaprotermes(incertae sedis)
Megaptera novaeangliae(humpback whale)
Megapteropsis(EXTINCT)
Megaptilidae(EXTINCT)
Megaptiloides(EXTINCT) (incertae sedis)
Megaptilus(EXTINCT)
Megapyge
Megarafonus
M-(Megarafonus)
M-(Nafonus)
M-(Nanorafonus)
Megarctosa
Megarcys
Megarididae
Megarthroides
Megarthropsini
Megarthropsis
Megarthrus
Megascelinae
Megascellus
Megascops(Screech Owls)
M-albogularis(White-throated Screech Owl)
M-asio(Eastern Screech Owl)
M-atricapilla(Black-capped Screech Owl)
M-barbarus(Bearded Screech Owl)
M-centralis(Choco Screech Owl)
M-choliba(Tropical Screech Owl)
M-clarkii(Bare-shanked Screech Owl)
M-cooperi(Pacific Screech Owl)
M-flammeolus(Flammulated Owl)
M-guatemalae(Vermiculated Screech Owl)
M-hoyi(Yungas Screech Owl)
M-ingens(Rufescent Screech Owl)
M-kennicottii(Western Screech Owl)
M-koepckeae(Koepcke's Screech Owl)
M-marshalli(Cloud-forest Screech Owl)
M-nudipes(Puerto Rican Screech Owl)
M-petersoni(Cinnamon Screech Owl)
M-roboratus(West Peruvian Screech Owl)
M-roraimae(Foothill Screech Owl)
M-sanctaecatarinae(Long-tufted Screech Owl)
M-seductus(Balsas Screech Owl)
M-trichopsis(Whiskered Screech Owl)
M-watsonii(Tawny-bellied Screech Owl)
Megasecoptera(EXTINCT)
Megasphaera
Megasternini
Megasternum
Megastilicus
Megathymus
M-beulahae
M-cofaqui
M-streckeri
M-texanus
M-ursus
M-violae
M-yuccae
Megatriorchis(incertae sedis)
Megatylopus(EXTINCT)
Megatyphlus
Megatyrus
Megaxenistusa
Megelytridae
Megelytron(EXTINCT)
Megenicocephalus
Megeuptychia
M-antonoe
M-monopunctata
Megisto
M-cymela
M-rubricata
Megistolotis
Megocalea
Megoleria
M-orestilla
M-susiana
Megonychiusa
Megophryidae
Megophrys
Megullia
Mehadiella
Mehuinia
Meiatermes(EXTINCT)
M-araripena(EXTINCT) (Lower Cretaceous of Brazil)
M-bertrani(EXTINCT) (Lower Cretaceous of Spain)
Meinertellidae
Meinertzhageniellidae
Meinertzhagenielliformia
Meiolaniidae(EXTINCT)
Meiothermus
Meithton
Melaenini
Melainacnemisa
Melalgus
Melampias
Melampitta(melampittas)
Melanalia
Melanargiina
Melanchiton
Melanchitonini
Melanchrous
Melandryidae(false darkling beetles)
Melanis
M-aegates
M-alena
M-boyi
M-cephise
M-cercopes
M-cinaron
M-cratia
M-electron
M-herminae
M-hillapana
M-hodia
M-leucophlegma
M-lioba
M-lycea
M-marathon
M-melandra
M-melaniae
M-opites
M-passiena
M-pixe
M-seleukia
M-smithiae
M-unxia
M-vidali
M-volusia
M-xenia
M-yeda
Melanitini
Melanitis
M-amabilis
M-ansorgei
M-atrax
M-belinda
M-boisduvalia
M-constantia
M-leda
M-libya
M-phedima
M-pyrrha
M-velutina
M-zitenius
Melanitta(Scoters)
M-americana(American Scoter)
M-deglandi(White-winged Scoter)
M-fusca(Velvet Scoter)
M-nigra(Black Scoter)
M-perspicillata(Surf Scoter)
Melanobatrachinae
Melanobatrachus
Melanoblossidae
Melanocetidae(Blackdevils)
Melanocharitidae(berrypeckers)
Melanocyma
Melanomys
Melanoparaeia(crescent-chests)
Melanoperdix niger(Black Partridge)
Melanophryniscus
Melanophylla
Melanoplinae(includes Podismini)
Melanoptochus
Melanopyge
M-cossea
M-erythrosticta
M-hoffmanni
M-maculosa
M-mulleri
Melanozosteria
Melanthiaceae
Melaphidini
Melaphis
Melastomataceae(meadow beauty family)
Melba
M-(Asymmelba)
M-(Cismelba)
M-(Frontelba)
M-(Melba)
M-(Rameloidea)
M-(Vertelba)
Melbamima
Melbournopterus(EXTINCT) (incertae sedis)
Meleagris(Turkeys)
M-gallopavo(Wild Turkey)
M-ocellata(Ocellated Turkey)
Melectini
Meleon
Melestora
Melete
M-calymnia
M-leucadia
M-leucanthe
M-lycimnia
M-polyhymnia
M-salacia
Meliaceae(mahogany family)
Melianthaceae(incl. Francoaceae and Greyiaceae)
Meliceria
M-(Cyrtoplectus)
M-(Meliceria)
Melidora
Melierax
Melinaea
M-ethra
M-idae
M-isocomma
M-lilis
M-ludovica
M-marsaeus
M-menophilus
M-mnasias
M-mneme
M-mnemopsis
M-satevis
Melinaeina
Meliphagidae(honeyeaters)
Meliphagoidea(honeyeaters, Australasian wrens, pardalotes, and their relatives)
Meliponini(stingless bees)
Melisodera
Melisoderina
Melissococcus
Melissotarsini
Melissotarsus
M-beccarii
M-emeryi
M-insularis
M-weissi
Melitaea
M-abyssinica
M-acreina
M-aetherie
M-agar
M-ala
M-alatauica
M-alraschid
M-ambigua
M-ambrisia
M-amoenula
M-arcesia
M-arduinna
M-asteria
M-asteroida
M-athalia
M-athene
M-aurelia
M-avinovi
M-balba
M-britomartis
M-cassandra
M-casta
M-caucasogenita
M-celadussa
M-centralasiae
M-chitralensis
M-cinxia
M-collina
M-consulis
M-deione
M-deserticola
M-diamina
M-didyma
M-didymina
M-didymoides
M-enarea
M-fergana
M-gina
M-infernalis
M-interrupta
M-kotshubeji
M-latonigena
M-leechi
M-ludmilla
M-lunulata
M-lutko
M-menetriesi
M-mimetica
M-minerva
M-ninae
M-pallas
M-parthenoides
M-permuta
M-persea
M-phoebe
M-plotina
M-protomedia
M-pseudosibina
M-punica
M-rebeli
M-romanovi
M-sarvistana
M-saxatilis
M-scotosia
M-shandura
M-sibina
M-solona
M-sultanensis
M-sutschana
M-telona
M-trivia
M-turanica
M-turkmanica
M-varia
M-westsibirica
M-yuenty
Melitaeini
Melittidae
Melizoderidae
Mellera
Mellicta-group
Melliera
M-brevipes
M-chorotega
M-major
M-mordax
Mellierella biroi
Mellierinae
Melloicosa
Melocichla(moustached grass-warbler)
Melocosa
Meloidae(blister beetles)
Melomantis
M-africana
M-asema
Melomys
Melophorus
M-aeneovirens
M-anderseni
M-bagoti
M-biroi
M-bruneus
M-constans
M-curtus
M-fieldi
M-fulvohirtus
M-hirsutus
M-insularis
M-iridescens
M-laticeps
M-ludius
M-majeri
M-marius
M-mjobergi
M-omniparens
M-pillipes
M-potteri
M-scipio
M-turneri
M-wheeleri
Melphina
M-argyrodes
M-evansi
M-flavina
M-hulstaerti
M-malthina
M-melphis
M-noctula
M-statira
M-statirides
M-tarace
M-unistriga
Melvilloxenus
Melyridae(soft-winged flower beetles)
Melyroidea
Memantis
M-anomala
M-fuliginosa
M-gardeneri
M-minor
Membracidae(treehoppers)
Membracoidea(leafhoppers, treehoppers)
Memecylaceae
Memphis
M-acaudata
M-acidalia
M-alberta
M-ambrosia
M-anassa
M-anna
M-appias
M-arginussa
M-artacaena
M-aulica
M-aureola
M-basilia
M-beatrix
M-boliviana
M-catinka
M-cerealia
M-cleomestra
M-cluvia
M-dia
M-falcata
M-forreri
M-glauce
M-grandis
M-hedemanni
M-herbacea
M-hirta
M-iphis
M-juliani
M-laertes
M-laura
M-lemnos
M-leonida
M-lineata
M-lorna
M-lyceus
M-maria
M-moeris
M-montesino
M-mora
M-moruus
M-neidhoeferi
M-nenia
M-oenomais
M-offa
M-otrere
M-pasibula
M-perenna
M-phantes
M-philumena
M-pithyusa
M-polycarmes
M-polyxo
M-praxias
M-proserpina
M-pseudiphis
M-salinasi
M-verticordia
M-viloriae
M-wellingi
M-xenippa
M-xenocles
Mena
Menander
M-aldasi
M-cicuta
M-clotho
M-coruscans
M-felsina
M-hebrus
M-laobotas
M-menander
M-pretus
M-thalassicus
MendesellaWhitfield & Mason 1994
M-amazonica
M-braziliensis
M-magna
M-orianae
Mendesellinae
Menelikia(EXTINCT)
Menemerus
M-acuminatus
M-albocinctus
M-animatus
M-banksi
M-bicolor
M-bivittatus
M-bracteatus
M-brevibulbus
M-congoensis
M-delus
M-depressus
M-dimidius
M-diversus
M-dubius
M-duvali
M-eburnensis
M-fagei
M-falconensis
M-falsificus
M-fasciculatus
M-felix
M-fraternus
M-fulvus
M-galapagoensis
M-gesneri
M-hottentotus
M-hunteri
M-hypenetes
M-illigeri
M-kochi
M-legalli
M-legendrei
M-lesnei
M-lesserti
M-marginatus
M-milloti
M-niger
M-ochraceus
M-paradoxus
M-plenus
M-proximus
M-rabudi
M-raji
M-rubicundus
M-schutzae
M-semilimbatus
M-soldanii
M-taeniatus
M-vernei
M-vittatus
M-wuchangensis
M-yunnanensis
Menetes
Mengea mengei(EXTINCT)
Mengea tertiaria(EXTINCT)
Mengeidae(EXTINCT) (incertae sedis)
Mengenilla arabica
Mengenilla australiensis
Mengenilla chobauti
Mengenilla gracilipes
Mengenilla kaszabi
Mengenilla marikovskii
Mengenilla orientalis
Mengenilla parvula
Mengenilla sinensis
Mengenillidae
Mengenillidia(monophyly uncertain)
Meniscus
Menispermaceae(moonseed family)
Menodora
Menoedius
Menoponidae
Mentophilonthus
Mentraphus
Menuridae(lyrebirds)
Menuroidea(Crow-like songbirds originating in Australia)
Menyanthaceae
Meonina
Meonis
Meotachys
Meotica
Meoticaops
Meoticella
Meranoplini
Meranoplus
M-ajax
Merganetta armata(Torrent Duck)
Mergellus albellus(Smew)
Mergus(Common Merganser and relatives)
M-merganser(Common Merganser)
M-octosetaceus(Brazilian Merganser)
M-serrator(Red-breasted Merganser)
M-squamatus(Scaly-sided Merganser)
Merinia
Merismoderus
Mermithida
Merocheta(flat-backed millipedes)
Merohister(~5 species)
Meronera
Meropalpus
Meropathina
Meropathus
Meropeidae
Meropidae(bee-eaters)
Merothripidae
Merriamoceros(EXTINCT)
Mertensiella caucasica
Mertensophryne
Meruidae
Merulinidae
Merycodus(EXTINCT)
Merycoidodontidae(EXTINCT) (oreodonts)
Mesacmaea
Mesagyrtoides(EXTINCT) (incertae sedis)
Mesaiokeratidae
Mesarthropterus
Mesecanus(EXTINCT)
Mesembia(non-monophyletic)
Mesembriacerus(EXTINCT)
Mesembriomys
Mesene
M-babosa
M-bomilcar
M-celetes
M-citrinella
M-croceella
M-cyneas
M-epaphus
M-florus
M-hyale
M-ingrumaensis
M-leucophrys
M-leucopus
M-margaretta
M-monostigma
M-mygdon
M-nepticula
M-nola
M-paraena
M-patawa
M-phareus
M-philonis
M-pyrippe
M-sardonyx
M-silaris
M-simplex
M-veleda
Mesenopsis
M-albivitta
M-briseis
M-bryaxis
M-melanochlora
M-pulchella
Mesepiola specca
Mesevania swinhoei(EXTINCT)
Mesitornis unicolor(Brown Mesite)
Mesitornis variegatus(White-breasted Mesite)
Mesitornithidae(Mesites)
Mesoaesthetus
Mesoblaberus(incertae sedis)
Mesobuthus
Mesocapnia
Mesocatops
Mesoceration
Mesoceros
Mesocinetes(EXTINCT)
Mesocolon
Mesocupes(EXTINCT) (incertae sedis)
Mesocupoides(EXTINCT) (incertae sedis)
Mesocyphon
Mesodina
M-aeluropsis
M-gracillima
M-halyzia
M-hayi
Mesoglicolidae
Mesognatharia
Mesohelophorus(EXTINCT) (incertae sedis)
Mesoleptochir
Mesolimulus
M-crespelli(EXTINCT)
M-sibiricus(EXTINCT)
M-syriacus(EXTINCT) (incertae sedis)
M-walchi(EXTINCT)
Mesomegaskela
Mesomyaria
Mesonemoura
Mesonia
Mesonoterus
MesonychoteuthisRobson, 1925
Mesoperla
Mesophaena
Mesophthalma
M-idotea
M-mirita
Mesoplasma
Mesoplatus
Mesoporini
Mesoporus
Mesopropithecus dolichobrachion(EXTINCT)
Mesopropithecus globiceps(EXTINCT)
Mesopropithecus pithecoides(EXTINCT)
Mesopteryx
M-alata
M-platycephala
M-robusta
Mesosagitta minima
Mesosauridae(EXTINCT)
Mesoscorpionina(EXTINCT)
Mesosemia
M-ackeryi
M-acuta
M-adida
M-ahava
M-albipuncta
M-amarantus
M-anceps
M-antaerice
M-araeostyla
M-asa
M-bahia
M-bella
M-carderi
M-carissima
M-ceropia
M-cippus
M-coelestis
M-cordillerensis
M-cyanira
M-cymotaxis
M-decolorata
M-dulcis
M-ephyne
M-epidius
M-erinnya
M-esmeralda
M-esperanza
M-eugenea
M-eumene
M-eurythmia
M-evias
M-friburgensis
M-gaudiolum
M-gemina
M-gertraudis
M-gneris
M-grandis
M-harveyi
M-hedwigis
M-hesperina
M-hypermegala
M-ibycus
M-impedita
M-inconspicua
M-isshia
M-jucunda
M-judicialis
M-kwokii
M-lacernata
M-lamachus
M-lapillus
M-latizonata
M-loruhama
M-luperca
M-lycorias
M-macella
M-machaera
M-macrina
M-maeotis
M-magete
M-mamilia
M-mancia
M-mathania
M-mayi
M-meeda
M-mehida
M-melaene
M-melese
M-melpia
M-menoetes
M-mesoba
M-messeis
M-methion
M-metope
M-metuana
M-metura
M-mevania
M-minos
M-minutula
M-misipsa
M-modulata
M-moesia
M-mosera
M-myonia
M-myrmecias
M-naiadella
M-nerine
M-nyctea
M-nympharena
M-odice
M-olivencia
M-orbona
M-ozora
M-pacifica
M-pardalis
M-phace
M-philocles
M-praeculta
M-putli
M-reba
M-rhodia
M-scotina
M-sifia
M-sirenia
M-steli
M-subtilis
M-sybillina
M-synnephis
M-telegone
M-tenebricosa
M-teulem
M-thera
M-thetys
M-thyas
M-thymetus
M-ulrica
M-veneris
M-walteri
M-zanoa
M-zikla
M-zonalis
M-zorea
Mesosemiina
Mesosemiini
Mesosperchus(EXTINCT) (incertae sedis)
Mesostaphylinus(EXTINCT)
Mesostigmata
Mesostoinae
Mesostruma
M-bella
M-browni
M-eccentrica
M-exolympica
M-inornata
M-laevigata
M-loweryi
M-turneri
Mesotachinus(EXTINCT)
Mesotachyporus(EXTINCT)
Mesotaenia
M-barnesi
M-vaninka
Mesotaeniaceae
Mesoteras(EXTINCT)
Mesotermopsis(EXTINCT) (Early Cretaceous of China)
Mesothelae
Mesothoris(EXTINCT) (incertae sedis)
Mesotitan(EXTINCT)
Mesotitanidae
Mesotitanodes(EXTINCT)
Mesotityus
Mesotriton alpestris
Mesotrochus
Mesotyphlus
M-(Acanthotyphlus)
M-(Dexiotyphlus)
M-(Mesotyphlus)
M-(Teleotyphlus)
Mesoveliidae(water treaders)
Mesoxantha
Mesoxylion
Mesozoa(incertae sedis)
Mesozoicaphididae(EXTINCT) (incertae sedis)
Messicobolidae
Messor
M-abdelazizi
Messua
M-centralis
M-dentiger
M-desidiosa
M-donalda
M-lata
M-laxa
M-limbata
M-moma
M-octonotata
M-pura
Mestogaster
M-(Mestogaster)
M-(Mestogastridius)
Mestra
Mesydra(EXTINCT) (incertae sedis)
Mesynodites
Metabacetus
M-arrowi
M-immarginatus
M-jeanneli
M-laotinus
M-perakianus
M-vandoesburgi
Metabrachinus
Metacervulus(EXTINCT)
Metacharis
M-cuparina
M-lucius
M-nigrella
M-ptolomaeus
M-regalis
M-syloes
M-victrix
M-xanthocraspedum
Metacheiromyidae(EXTINCT)
Metacorneolabium
Metacromantis oxyops
Metactenistes
Metacyrba
M-floridana
M-insularis
M-nigrosecta
M-pictipes
M-punctata
M-taeniola
Metacyrba-like bark dwellers
Metadeinopsis
M-balli0(incertae sedis)
M-brunnea
M-ferox0(incertae sedis)
M-longicornis
M-matthewsi
Metadiaea
Metagalepsus
M-occidentalis
M-stramineus
Metagerontia
M-tribulosa
Metagyrinus
Metahepialus anguistiptera
Metahepialus plurimaculata
Metahepialus xenoctenis
Metahydnobius
Metallosphaera
Metallyticus
M-fallax
M-pallipes
M-semiaeneus
M-splendidus
M-violaceus
Metamorpha elissa
Metanephrocerus collini(EXTINCT) (monophyly uncertain)
Metanocticola
Metapeachia
Metaphatus
Metaphidippus
M-carmenensis
M-chera
M-diplacis
M-emmiltus
M-mannii
M-mathetes
M-melanomerus
M-sensu stricto
M-texanus
M-tricolor
M-vitis
Metaphrynella
Metapinophilus
Metaplectodes
Metapone
M-bakeri
M-emersoni
M-gracilis
M-greeni
M-hewitti
M-jacobsoni
M-johni
M-krombeini
M-leae
M-madagascarica
M-mjobergi
M-nicobarensis
M-quadridentata
M-sauteri
M-tillyardi
M-tricolor
M-truki
Metarbelinae
Metardaris
Metasepia
M-pfefferi
M-tullbergi
Metasmilia(EXTINCT)
Metasynodites
Metaviridae
Metaxellus
Metaxinidium
Metaxyaceae
Metaxygnathus(EXTINCT)
Metaxylostiba
Metaxys
Metaxytherium(EXTINCT)
Metechonica
Metedwardsia
Metembia
Meteorideinae
Meteorinae
Methana
Methanobacteriales
Methanococcales
Methanomicrobiales
Methanopyrales
Methion melas
Methionopsis
M-dolor
M-ina
M-purus
M-typhon
Methistemistiba
Methneria
Methnerotherium
Methochinae
Methona
M-confusa
M-curvifascia
M-grandior
M-maxima
M-megisto
M-singularis
M-themisto
Methone
Methorius
Metidae
Metiini
Metilia
M-boliviana
M-brunnerii
Metisella
M-aegipan
M-alticola
M-angolana
M-carsoni
M-congdoni
M-decipiens
M-formosus
M-kakamega
M-kambove
M-kumbona
M-malgacha
M-medea
M-meninx
M-metis
M-midas
M-orientalis
M-perexcellens
M-quadrisignatus
M-syrinx
M-trisignatus
M-tsadicus
M-willemi
Metius
Metocalea
Metocinus
Metoligotoma(non-monophyletic)
Metolinus
Metoncidus
M-epiphytus
M-gracilus
M-tenebrionides
Metopias
Metopiasina
Metopiasini
Metopiasoides
Metopidiotrichidae
Metopiellus
Metopiosoma
Metopioxys
Metopsia
Metosina
Metoxypilus
M-costalis
M-lobifrons
M-werneri
Metridiidae
Metridinidae
Metridiochoerus(EXTINCT)
Metridium
M-canumStuckey 1914
Metridium concinnataDana 1849
Metridium muscosaDana 1849
M-parvulumMc Murrich [sic] 1904
Metridium praetextaDana 1849
Metriini
Metriomantis
M-boliviana
M-cupido
M-occidentalis
M-ovata
M-paraensis
M-pilosella
Metrius contractus
Metrius explodens
Metron
M-chrysogastra
M-leucogaster
M-noctis
M-oropa
M-schrottkyi
M-zimra
Metropator(EXTINCT)
Metropatoridae
Metrotyphlini
Metrotyphlus
M-(Agnotyphlus)
M-(Metrotyphlus)
Metylophorini
Metylophorus
Mexico
Mexigaster
Mexiplectus
Meza
M-banda
M-budonga
M-cybeutes
M-elba
M-indusiata
M-larea
M-leucophaea
M-mabea
M-mabillei
M-meza
Miacidae(EXTINCT)
Miallo
Mianeuretus mirabilis(EXTINCT)
Miathamia
Michelsonia
Michenia(EXTINCT)
Micrabacia(EXTINCT)
Micrabaciidae
Micragasma
Micrallectidae
Micralymma
Micranops
Micrapate
Micrapoderiger
Micrastur(Forest Falcons)
M-buckleyi(Buckley's Forest Falcon)
M-gilvicollis(Lined Forest Falcon)
M-mintoni(Cryptic Forest Falcon)
M-mirandollei(Slaty-backed Forest Falcon)
M-plumbeus(Plumbeous Forest Falcon)
M-ruficollis(Barred Forest Falcon)
M-semitorquatus(Collared Forest Falcon)
Micrathene whitneyi(Elf Owl)
Micratheta
Micratopus
Micrearota
Micrelytriger
Micrevania
Micridina
Micridium
Micrillus
Micrixalus
Microbacterium
Microbatrachella
Microbatrisodes
Microbiotheria(monito del monte & extinct relatives)
Microbispora
Microblatta
Microbolbella
Microbrachida
Microbuthus
Microcara
Microcebus murinus
Microcebus rufus
Microcephalina
Microcephalops
M-adunatus
M-angustifacies
M-anthracias
M-banksi
M-borneensis
M-brevicornis
M-conspectus
M-damasi
M-dolosus
M-exsertus
M-fimbriatus
M-floridae
M-griseus
M-homoeophanes
M-inermus
M-kurseongeniensis
M-latifrons
M-microdes
M-minisculus
M-montanus
M-mutuus
M-opacus
M-parafloridae
M-ravilateralis
M-rufopictus
M-spenceri
M-stenopsis
M-subaeneus
M-subdolosus
M-transversalis
M-williamsi
Microcephalopsini
Microcephalus
Microceratheta
Microcerberidea
Microceris
Microcerophilus
Microcerotermes
Microceroxenina
Microceroxenus
Microcheilini
Microchiela denticollis
Microchiela picea
Microchiroptera(Echolocating Bats)
Micrococcineae
Micrococcus
Microcodidae
Microcodon
Microcoleus
Microcorsini
Microcystis
Microcytheridae
Microdaceton
M-exornatum
M-tanyspinosum
M-tibialis
M-viriosum
Microdictya(EXTINCT)
Microdina
Microdinarda
Microdiplatys(EXTINCT)
Microdonia
Microdulia
Microedus
MicroeledoneNorman, Hochberg and Boucher-Rodoni, 2004
Microembia rugosifrons(incertae sedis)
Microfalcula delamarei
Microfustigerinus
Microgale(shrew tenrecs) (monophyly uncertain)
M-brevicaudata(short-tailed shrew tenrec)
M-cowani(Cowan's shrew tenrec)
M-dobsoni(Dobson's shrew tenrec)
M-drouhardi(Drouhard's shrew tenrec)
M-dryas(tree shrew tenrec)
M-fotsifotsy(pale shrew tenrec)
M-gracilis(gracile shrew tenrec)
M-gymnorhyncha(naked-nosed shrew tenrec)
M-longicaudata(lesser long-tailed shrew tenrec)
M-monticola(montane shrew tenrec)
M-nasoloi(Nasolo's shrew tenrec)
M-parvula(pygmy shrew tenrec)
M-principula(greater long-tailed shrew tenrec)
M-pulla(dark shrew tenrec)
M-pusilla(least shrew tenrec)
M-soricoides(shrew-toothed shrew tenrec)
M-taiva(Taiva shrew tenrec)
M-talazaci(Talazac's shrew tenrec)
M-thomasi(Thomas's shrew tenrec)
Microgastrinae
Microgilia minutiflora
Microgmocerus
Micrognathozoa(incertae sedis)
Microhierax(Falconets)
M-caerulescens(Collared Falconet)
M-erythrogenys(Philippine Falconet)
M-fringillarius(Black-thighed Falconet)
M-latifrons(White-fronted Falconet)
M-melanoleucos(Pied Falconet)
Microhodotermes
Microhyla
Microhylidae
Microhylinae
Microlepadidae
Microleptus
Microlia
Microlinus
Microlophichthys
Microlunatus
Microlynx(EXTINCT)
Micromalthus debilis
Micromantis glauca
Micromelerpetontidae(EXTINCT)
Micromeryx(EXTINCT)
Micromonas
Micromonospora
Micromonosporineae
Micromus
Micromys(incertae sedis)
Micromyzon
Micronemadus
Micronetini
Micronisus(incertae sedis)
Micropeplinae
Micropeplus
Microperla
Micropezidae
Microphengodes
Micropholocommatidae
Microphoridae
Microphotina
Microphthalmus(incertae sedis)
Microphysidae
Microplectus
Micropodarke
Micropolemon
Micropontiidae
Micropotamogale(dwarf otter shrews)
M-lamottei(Nimba otter shrew)
M-ruwenzorii(Ruwenzori otter shrew)
Micropruina
Micropterigidae(mandibulate archaic moths)
Micropterix
Micropternodontidae(EXTINCT)
Microptilium
Microptysmatidae(EXTINCT)
Micropygia schomburgkii(Ocellated Crake)
Microraphes
Microryzomys
Microsauria(EXTINCT) (non-monophyletic)
Microscilla
Microsciurini(Neotropical dwarf squirrels)
Microsciurus
Microscydmus
M-(Delius)
M-(Microscydmus)
M-(Neladius)
M-(Neoscydmus)
Microsilphinae
Microsphaera
Microsporidia(incertae sedis)
Microsteris gracilis
Microstigmatidae
Microstonyx(EXTINCT)
Microtachyporus
Microtermes
Microtetraspora
Microtettigoniidae(Micro katydids) (incertae sedis)
Microthespis
M-dmitriewi
M-evansi
Microthoraciidae
Microtia elva
Microtityus
Microtypinae
Microviridae
Microvirus
Microzaena
M-angustior
M-chrysomeloides
M-levis
M-madecassa
Microzethinus
Microzethopsis
Mictacea
Mictris
Midgee
Midilinae
Mielkella
Migadopidius
Migadopini
Migadops
Migidae
Mikado
Mikrocodides
Milanion
M-alaricus
M-clito
M-cramba
M-hemes
M-leucaspis
M-marciana
M-pilumnus
Mildana
Miletinaethe carnivorous butterflies
Miletini
Miletus
M-ancon
M-archilocus
M-bannanus
M-biggsi
M-boisduvali
M-celinus
M-cellarius
M-chinensis
M-croton
M-drucei
M-gaesa
M-gaetulus
M-gallus
M-gigantes
M-gopara
M-heracleion
M-leos
M-longeana
M-mallus
M-melanion
M-nymphis
M-petronius
M-rosei
M-symethus
M-valeus
M-zinckenii
Milichiidae
Millaa
Millardia(incertae sedis)
Millerettidae(EXTINCT)
Millettieae
Millettioid sensu lato clade
Millidium
Millotauropodidae
Millotauropus
Millotellina
Millotoca
Milne-Edwardsia akkeshiUchida 1932
Milne-Edwardsia dixoniCarlgren 1921
Milne-Edwardsia loveniCarlgren 1892
Milne-Edwardsia nathorstiCarlgren 1921
Milne-Edwardsia polarisCarlgren 1921
Miltomiges
Milvago
M-chimachima(yellow-headed caracara)
M-chimango(chimango caracara)
Milvus
Mimacamatus
Mimaenictus
Mimallonidae(sackbearer moths)
Mimanomma
Mimanommatina
Mimanommatini
Mimardaris
M-aerata
M-lomax
M-minthe
M-montra
M-pityusa
M-porus
M-sela
Mimatheta
Mimathyma
Mimecitina
Mimeciton
Mimene
M-albiclavata
M-albidiscus
M-atropatene
M-basalis
M-biakensis
M-caesar
M-celia
M-celiaba
M-cyanea
M-kolbei
M-lysima
M-melie
M-milnea
M-miltias
M-orida
M-ozada
M-sariba
M-saribana
M-verda
M-waigeuensis
M-wandammenensis
M-wara
Mimetidae
Mimeutermes
Mimia
M-chiapaensis
M-phydile
Mimidae(mimic thrushes)
Mimivirus(incertae sedis)
Mimizuku gurneyi(Giant Scops Owl)
Mimobates
Mimoblepia
Mimocete
Mimocyptus
Mimodictyon
Mimogonellus
Mimogonia
Mimogonidius
Mimogonoderus
Mimogonus
Mimomantis milloti
Mimoniades
M-baroni
M-montana
M-nurscia
M-ocyalus
M-versicolor
Mimonilla
Mimonillina
Mimopaederus
Mimophites
Mimopinophilus
Mimopisalia
Mimoplandria
Mimoplectus
Mimoscydmus
Mimosilpha
Mimosticus
Mimotrochus
Mimozaena
Mimulopsis
Minablatta(incertae sedis)
Minacraga
M-aenea
M-argentata
M-disconitens
M-hyalina
M-indiscata
M-itatiaia
M-plata
M-similis
Minacragides arnacis
Mindaridae
Minibi
Miniperla(incertae sedis)
Ministeria(genus of heterotrophic flagellates)
Minmi(EXTINCT)
Minois(incertae sedis)
M-aurata
M-dryas
M-paupera
Minonoa
M-elvira
M-pachitea
M-perbella
Minor holopelagic Phyllodocida(non-monophyletic)
Minthea
Mintonia
Minyadidae
Minyas coeruleaLesson 1830
Minyas torpedoBell 1885
Minyobates
Miobantia
M-aptera
M-ciliata
M-fuscata
M-nebulosa
M-phryganea
M-rustica
Miobdelus
Mioblatta
Miocupes(EXTINCT) (incertae sedis)
Miodugong(EXTINCT)
Miolabinae(EXTINCT)
Miolabis(EXTINCT)
Miolithocharis(EXTINCT)
Miomantinae
Miomantini
Miomantis
M-abyssinica
M-acutipes
M-affinis
M-alata
M-amanica
M-andreinii
M-annulipes
M-arabica
M-aurantiaca
M-aurea
M-binotata
M-bintumanensis
M-brachyptera
M-brevipennis
M-brunni
M-buettneri
M-caffra
M-cinnabarina
M-ciprianii
M-coxalis
M-devylderi
M-diademata
M-ehrenbergi
M-equalis
M-exilis
M-fallax
M-feminina
M-fenestrata
M-griffinii
M-gyldenstolpei
M-helenae
M-kibweziana
M-kilimandjarica
M-lacualis
M-lamtoensis
M-longicollis
M-menelikii
M-milmilena
M-minuta
M-misana
M-mombasica
M-monacha
M-montana
M-multipunctata
M-nairobiensis
M-natalica
M-ornata
M-paykullii
M-pellucida
M-planivertex
M-prasina
M-preussi
M-pygmaea
M-quadripunctata
M-rebeli
M-rehni
M-rouxi
M-rubra
M-sangarana
M-saussurei
M-scabricollis
M-semialata
M-sjoestedti
M-steelae
M-tangana
M-tenuis
M-togana
M-usambarica
M-vitrea
M-wittei
Miomatoneura(EXTINCT)
Miomatoneurella(EXTINCT)
Miomoptera(EXTINCT)0(incertae sedis)
Miomyrmex(EXTINCT) (incertae sedis)
M-impactus(EXTINCT)
M-striatus(EXTINCT)
Miopanesthia
Miopelodytes(EXTINCT)
Miopieris(EXTINCT)
Miopithecus
Mioproteus caucasicus(EXTINCT)0(incertae sedis)
Mioptachys
Miopteryginae
Miosilpha(EXTINCT)
Miosiren(EXTINCT)
Miosireninae
Miosolenopsis fossilis(EXTINCT) (incertae sedis)
Miostylopyga
Miotermes(EXTINCT)
M-insignis(EXTINCT) (Upper Miocene of Germany) (incertae sedis)
M-procerus(EXTINCT) (Lower Miocene of Croatia) (incertae sedis)
M-randeckensis(EXTINCT) (Middle Miocene of Germany) (incertae sedis)
M-spectabilis(EXTINCT) (Upper Miocene of Germany) (incertae sedis)
Miothyrsocera
Miotylopus(EXTINCT)
Mipseltyrus
Miracanthops
M-lombardoi
M-poulaini
Miraciidae
Miracinae
Miraculidae(incertae sedis)
Miraculinae
Miraja
M-flora
M-howa
M-ismael
M-ochracea
M-paroechus
M-sida
M-silvestralis
M-sylvia
M-varians
Mirbelioid sensu lato clade
Mircogioton
Mirellus
Miriamica
M-thalassina
M-weiskei
Miriamrothschildia
Miridae(leaf bugs, plant bugs)
Mirina
M-christophi
M-confucius
Miroblatta(incertae sedis)
Mirocapritermes
Miroclavigerina
Miromantis mirandula
Mironasutitermes
Mirza coquereli(Coquerel's dwarf lemur)
Misantlius
Miscellaneous fossil Old World deer(EXTINCT) (non-monophyletic)
Miscellaneous fossil artiodactyls(EXTINCT) (non-monophyletic)
Miscellaneous fossil bovids(EXTINCT) (non-monophyletic)
Miscellaneous fossil cervids(EXTINCT) (non-monophyletic)
Miscellaneous fossil pecorans(EXTINCT) (non-monophyletic)
Miscellaneous salticids with a fixed embolus
Miscellaneous salticids with a free embolus
Mischoptera(EXTINCT)
Mischopteridae
Miscodera
Misius
Misodendraceae
Misophriidae
Misophrioida
Misumena
Misumenoides
Misumenops
Mitactis Australiae[sic] Haddon and Duerden 1896
Mitactis similisHaddon and Duerden 196 [sic]
Mitilanotherium(EXTINCT)
Mitomorphus
Mitona
Mitrametopus
Mitsuokella
Mitu(Crestless Curassow and relatives)
M-mitu(Alagoas Curassow)
M-salvini(Salvin's Curassow)
M-tomentosum(Crestless Curassow)
M-tuberosum(Raxor-billed Curassow)
Miturgidae
Mixodectidae(EXTINCT)
Mixophyes
Mixopteridae(EXTINCT)
Mixopteroidea(EXTINCT)
Mixtotheriidae(EXTINCT)
Mnaseas
M-bias
Mnasicles
M-geta
M-hicetaon
M-thymoetes
Mnasilus
Mnasinous patage
Mnasitheus
M-cephoides
M-chrysophrys
M-continua
M-forma
M-gemignanii
M-nella
M-nitra
M-ritans
M-simplicissima
M-spangla
M-strandi
Mnesarchaeidae(New Zealand primitive moths)
Mnesicleinae
Mnestheus
M-damma
M-ittona
Mnia
Mniobia
Mniusa
Mnseas bicolor
Mnuphorus
Mobiluncus
Mochokidae
Moclaybalistidae(EXTINCT)
Mocyta
Modestobacter
Moduza(incertae sedis)
M-jumaloni
M-mata
M-nuydai
M-pintayana
M-procris
M-thespias
M-urdaneta
Modysticus
Moeocerus
M-(Moeocerus)
M-(Polystictomoeocerus)
Moeris
M-ekka
M-hyagnis
M-padus
M-striga
M-submetallescens
Moeritheriidae(EXTINCT)
Moeros
Mogibacterium
Mogrus
Molannidae
Molarochoerus(EXTINCT)
Molestella
Molidae
Molitorosa
Molla molla
Mollicutes
Molluginaceae
Mollusca(snails, clams, squids, etc.)
Molluscipoxvirus
Molo
M-calcarea
M-mango
M-muzo
M-visendus
Molopidius
Molopinus
Molops
Molopsida
Molossidae(Free-tailed Bats)
Molossinae
Molossoidea
Molothrus
M-aeneus(Bronzed Cowbird)
M-ater(Brown-headed Cowbird)
M-bonariensis(Shiny Cowbird)
M-oryzivora(Giant Cowbird)
M-rufoaxillaris(Screaming Cowbird)
Molpadiida(rat-tailed sea cucumbers)
Moltena
Moltenocupes townrowi(EXTINCT)
Moluchia
Molytria
Momotidae(motmots)
Momphidae(mompha moths)
Monacanthidae
Monachister(1 species)
Monachoda
Monachozela
Monaeses
Monarchidae(monarch flycatchers)
Monastria
Monca
M-branca
M-jera
M-ornata
M-telata
Moncini
Monethe
M-albertus
M-alphonsus
Moneuptychia
M-griseldis
M-melchiades
M-paeon
M-soter
M-umuarama
Mongolicosa
Mongoliulidae
Monguzziella
Monhysterida
Monias benschi(Subdesert Mesite)
Monimiaceae
Monista
Monobothrus
Monocharis
Monocotyledons(lilies, orchids, palms, grasses, and their relatives)
Monocrypta
Monodiger
Monodontidae(narwhale and beluga)
Monodontocerus
Monodryxus crassus
Monogenea
Monognathidae
Monogononta
Monolobus
Monomachidae
Monommata
Monommatidae
Monomorium
M-abeillei
Monomyces
Mononchida
Mononegavirales
Mononychoblatta
Monopisthocotylea
Monoplacophora(Tryblidia)
Monostilifera(monophyly uncertain)
Monotomidae(root-eating beetles)
Monotonodites
Monotremata(platypus, echidnas)
Monsteropterum(EXTINCT) (incertae sedis)
Monstrilloida
Montanarophyllia(EXTINCT)
Monteithostolus
Montigyra
Montiniaceae
Montlivaltiidae(EXTINCT)
Monura
Monyx(EXTINCT)
Monza
M-alberti
M-cretacea
M-punctata
Moorea
Mooreana
M-princeps
M-trichoneura
Moorella
Mopala
Mopiopia
Mopsus(Old World)
Morabidae
Morabinae
Moraceae(mulberry or fig family)
Morana
Moraphilus
Morastus
Moravia(EXTINCT)
Moraviptera(EXTINCT)
Moravocoleus permianus(EXTINCT)
Moravohymen(EXTINCT)
Moravohymenidae
Mordacia
Mordellidae(tumbling flower beetles)
Mordelloscaphium
Mordvilkoja
Morenelaphus(EXTINCT)
Morenocetus(EXTINCT)
Morina(monophyly uncertain)
Morinaceae
Moringaceae
Moringuidae
Moriodema
Moriomorpha
Morion
M-angustus
M-aridus
M-attenuatus
M-australis
M-baloghi
M-biroi
M-bithynicus
M-boliviensis
M-boninensis
M-brasiliensis
M-brevior
M-caledoniae
M-congoensis
M-constrictus
M-cordatus
M-costiger
M-crassipes
M-cucujoides
M-cyclomus
M-dalbertisi
M-doriae
M-germanus
M-guineensis
M-humeratus
M-japonicus
M-jordani
M-lafertei
M-longicollis
M-longipennis
M-luzonicus
M-monilicornis
M-novaehollandiae
M-olympicus
M-orientalis
M-pachysomus
M-parallelus
M-piceus
M-polynesiae
M-simplex
M-simulatus
M-victoriae
Morionidius
M-charon
M-doriae
M-erebus
M-inexpectatus
M-insularis
Morionini(monophyly uncertain)
Moriosomus
M-motschulskyi
M-seticollis
M-sylvestris
Morius
Mormellus
Mormonilloida
Mormoopidae(Mustached Bats)
Mormotomyiidae
Mormyridae
Morphetaerius
Morphini
Morphna
Morphnus
Morpho
M-(Cypritis)
M-(Iphimedeia)
M-(Schwartzia)
M-(lphixibia)
M-absoloni(incertae sedis)
M-achilles
M-aega
M-amphitryton
M-anaxibia
M-athena(incertae sedis)
M-aurora
M-cisseis
M-cypris
M-deidamia
M-epistrophus
M-eugenia
M-hecuba
M-helenor
M-hercules
M-lympharis(incertae sedis)
M-marcus
M-menelaus(monophyly uncertain)
M-niepelti(incertae sedis)
M-polyphemus
M-portis
M-rhetenor
M-rhodopteron(incertae sedis)
M-richardus(incertae sedis)
M-sulkowskyi
M-telemachus
M-theseus
M-uraneis(incertae sedis)
M-zephyritis(incertae sedis)
Morphopsis(incertae sedis)
M-albertisi
M-biakensis
M-meeki
M-phippsi
M-ula
Morseinae
Mortierellales
Mortola mortola
Morulininae
Morus
M-bassanus(Northern Gannet)
M-capensis(Cape Gannet)
M-serrator(Australasian Gannet)
Morvina
M-falisca
M-fissimacula
M-morvus
Morys
M-compta
M-geisa
M-sinta
M-sobra
M-subgrisea
M-subviridis
M-valerius
M-yahua
Moschidae(musk deer)
Moschiola meminna(Indian spotted chevrotain)
Moschoneura
Moschus berezovskii(Chinese forest musk deer)
Moschus chrysogaster(Alpine musk deer)
Moschus cupreus(Kashmir musk deer)
Moschus fuscus(black musk deer or dusky musk deer)
Moschus leucogaster(Himalayan musk deer or white-bellied musk deer)
Moschus moschiferus(Siberian musk deer )
Moselia
Mossman
Motacillidae(pipits and wagtails)
Motasingha
M-dirphia
M-trimaculata
Motonerus
Motschtyrus
Motschulskium
Mucetum
Mucia
M-gulala
M-immaculatus
M-scitula
M-zygia
Mucorales
Mucoromycotina
Mucrotermes
Muelleriella
Mugiliformes(grey mullets)
Mullerornis(EXTINCT)
Multicalycidae
Multicilia(genus of heterotrophic flagellates)
Multituberculata(EXTINCT)
Multivalvulida
Mummuciidae
Mundaring
Muntiacus
M-atherodes(Bornean yellow muntjac)
M-crinifrons(black muntjac)
M-feae(Fea's muntjac)
M-gongshanensis(Gongshan muntjac)
M-leilaoensis(EXTINCT)
M-muntjak(Indian muntjac)
M-putaoensis(little leaf muntjac)
M-reevesi(Chinese muntjac)
M-rooseveltorum(Roosevelt's muntjac)
M-truongsonensis(Truongson muntjac)
Muntingiaceae
Muntjacs
Mupapillomavirus
Muraenesocidae
Muraenidae
Murathus
Murexus
Muricauda
Muricoidea
Muridae
Murinae(Old World mice and rats, whistling rats)
Muritaia
Muroidea(mice, rats, hamsters, gerbils, voles, lemmings)
Muromegalovirus
Murphyanella
Mus
Musaceae
Musaeus
Musapsocidae
Muschampia
M-antonia
M-cribrellum
M-gigas
M-kuenlunus
M-leuzeae
M-lutulenta
M-mohammed
M-nobilis
M-poggei
M-prometheus
M-proteus
M-protheon
M-proto
M-staudingeri
M-tersa
M-tessellum
Muscicapidae(Old World flycatchers)
Muscicapoidea
Muscidae
Muscimantis montana
Muscoidea
Muscomorpha
Musonia
M-boliviana
M-costalis
M-lineata
M-maculata
M-seclusa
M-sexdentata
M-surinama
Musoniella
M-affinis
M-argentina
M-brasiliensis
M-chopardi
M-fragilis
M-ipiranga
M-laevithorax
M-longicauda
M-parva
Musoniola
M-conservatrix
M-dohrniana
M-plurilobata
M-venezuelana
M-vicina
Musophagiformes(Turacos, Go-away-birds, Plantain-eaters)
Musotiminae
Mussidae
Mustelicosa
Mustelidae(weasels, otters, ferrets, badgers, skunks, wolverines, etc.)
Mutillidae(velvet ants)
Mutillinae
Muva(EXTINCT)
Muzoa
Myas
Mycalesina
Mycalesis
M-[sp. a]
M-[sp. b]
M-adamsoni
M-aethiops
M-anapita
M-anaxias
M-anaxioides
M-annamitica
M-arabella
M-aramis
M-asophis
M-barbara
M-bazochii
M-biformis
M-bilineata
M-bisaya
M-cacodaemon
M-comes
M-discobolus
M-drusillodes
M-duponchelii
M-durga
M-elia
M-evansii
M-felderi
M-francisca
M-fulvianetta
M-fuscum
M-giamana
M-gotama
M-heri
M-horsfieldi
M-igilia
M-igoleta
M-inayoshii
M-inopia
M-intermedia
M-ita
M-itys
M-janardana
M-lepcha
M-maianeas
M-malsara
M-malsarida
M-mamerta
M-manii
M-marginata
M-mehadeva
M-messene
M-mestra
M-mineus
M-misenus
M-mnasicles
M-moorei
M-mucia
M-mulleri
M-mynois
M-mystes
M-nala
M-nerida
M-nicotia
M-oculus
M-oroatis
M-orseis
M-panthaka
M-patiana
M-patnia
M-pernotata
M-perseoides
M-perseus
M-phidon
M-pitana
M-radza
M-rama
M-sangaica
M-sara
M-shiva
M-siamica
M-sirius
M-splendens
M-suaveolens
M-sudra
M-tagala
M-terminus
M-thailandica
M-thyateira
M-treadawayi
M-valeria
M-visala
M-wayewa
Mycastor
M-leucarpis
M-nealces
M-scurrilis
Mycenaceae
Mycetagroicus
M-cerradensis
M-triangularis
M-urbanus
Mycetarotes
M-acutus
M-carinatus
M-parallelus
M-senticosus
Mycetocola
Mycetomorphidae
Mycetophagidae(hairy fungus beetles)
Mycetophilidae
Mycetophylax
M-bruchi
M-conformis
M-cristulatus
M-emeryi
M-glaber
M-simplex
Mycetoporini
Mycetoporus
Mycetosoritis
M-aspera
M-clorindae
M-explicata
M-hartmanni
M-vinsoni
Mycetota
Mycobacterium
Mycocepurus
M-curvispinosus
M-goeldii
M-obsoletus
M-smithii
M-tardus
Mycophagus
Mycoplasma
Mycopteropoidea(EXTINCT)
Mycoreovirus
Mycosphaerellaceae
Mycteridae(palm beetles, flower beetles)
Mycteropidae(EXTINCT)
Mycterotermes
Myctophidae(lanternfishes)
Myctophinae
Mydidae(Mydas flies)
Mydinae
Myersiella
Myersinella
Mygalomorphae(tarantulas, trapdoor spiders, etc.)
Mygona
M-irmina
M-prochyta
Myicolidae
Mylacrina
Myllaena
Myllaenini
Mylohyus(EXTINCT)
Mylomys
Mylon
M-ander
M-argonautarum
M-cajus
M-cristata
M-exstincta
M-illineatus
M-jason
M-lassia
M-maimon
M-mestor
M-orsa
M-pelopidas
M-salvia
M-simplex
M-zephus
Mylothris
M-agathina
M-alberici
M-alcuana
M-arabicus
M-asphodelus
M-atewa
M-basalis
M-bernice
M-carcassoni
M-celisi
M-chloris
M-citrina
M-continua
M-crawshayi
M-croceus
M-elodina
M-erlangeri
M-ertli
M-flaviana
M-hilara
M-humbloti
M-jacksoni
M-kiellandi
M-kilimensis
M-kiwuensis
M-leonora
M-mafuga
M-mavunda
M-mortoni
M-ngaziya
M-nubila
M-ochracea
M-ochrea
M-phileris
M-pluviata
M-polychroma
M-poppea
M-rembina
M-rhodope
M-ruandana
M-rubricosta
M-rueppellii
M-sagala
M-schoutedenii
M-schumanni
M-similis
M-sjoestedti
M-smithii
M-spica
M-splendens
M-sulphurea
M-superbus
M-talboti
M-trimenia
M-yulei
Mymaridae
Mymarommatidae
Mymoorapelta(EXTINCT)
Mynes
Mynogleninae
Myobatrachinae
Myobatrachus
Myodocarpaceae
Myodocopa
Myodocopina
Myomys
Myonanthus
M-ambiguusMc Murrich [sic] 1893
M-bankamensisCarlgren 1928
Myopias
M-chapmani
Myopopone
M-castanea
M-sinensis
Myoporaceae
MyopsidaNaef, 1916
Myopsocidae
Myorycteropus(EXTINCT)
Myosciurus
Myospalacinae
Myotragus(EXTINCT)
Myotyphlus jansoni
Myoviridae
Myrcidris epicharis
Myrcinus
M-aspera
M-octispinus
M-tuberosus
Myriactis tubicolaHaddon 1888
Myriangiaceae
Myriangiales
Myriapoda
Myricaceae(bayberry family)
Myrinia
M-binoculus
M-catua
M-laddeyi
M-myris
M-raymundo
M-santa
Myristicaceae(nutmeg family)
Myrmarachne
M-aenescens
M-albicrurata
M-albosetosa
M-alticeps
M-andrewi
M-andringintra
M-angusta
M-annamita
M-annandalei
M-assimilis
M-attenuata
M-augusta
M-bakeri
M-bamakoi
M-bengalensis
M-bicolor
M-bicurvata
M-bidentata
M-biseratensis
M-borneensis
M-brasiliensis
M-calcuttaensis
M-capito
M-centralis
M-chapmani
M-chickeringi
M-clavigera
M-cognata
M-collarti
M-confusa
M-consobrina
M-constricta
M-contracta
M-cornuta
M-corpuzrarosae
M-cowani
M-cuneata
M-cuprea
M-daitarensis
M-debilis
M-decorata
M-denticulata
M-diegoensis
M-dilatata
M-dubia
M-dundoensis
M-edentula
M-eidmanni
M-electrica
M-elongata
M-erythrocephala
M-eugenei
M-eumenes
M-evidens
M-exasperans
M-exultans
M-foenisex
M-foreli
M-formica
M-formicaria
M-formosa
M-formosana
M-formosicola
M-furcata
M-galianoae
M-gedongensis
M-gigantea
M-giltayi
M-gisti
M-globosa
M-guaranitica
M-hanoii
M-hesperia
M-hidaspis
M-himalayensis
M-hoffmanni
M-ichneumon
M-imbellis
M-incerta
M-inermichelis
M-inflatipalpis
M-insulana
M-iridescens
M-isolata
M-jacobsoni
M-jajpurensis
M-japonica
M-jugularis
M-kiboschensis
M-kilifi
M-kitale
M-kochi
M-kuroiwana
M-kuwagata
M-laeta
M-lateralis
M-laurentina
M-lawrencei
M-legon
M-leleupi
M-leptognatha
M-lesserti
M-longiventris
M-luachimo
M-luctuosa
M-lugens
M-lugubris
M-lulengana
M-lulengensis
M-lupata
M-lurida
M-macgregori
M-macleayana
M-macrognatha
M-magna
M-mahasoa
M-mandibularis
M-manducator
M-maratha
M-marshalli
M-matsumurana
M-maxillosa
M-melanocephala
M-militaris
M-mocamboensis
M-moesta
M-mussungue
M-myrmicaeformis
M-naro
M-natalica
M-nemorensis
M-nigella
M-nigeriensis
M-nigra
M-nitidissima
M-nubilis
M-obscura
M-opaca
M-orientalis
M-paivai
M-palladia
M-panamensis
M-parallela
M-patellata
M-paviei
M-peckhami
M-pectorosa
M-penicillata
M-piercei
M-plataleoides
M-platypalpus
M-poonaensis
M-prava
M-prognatha
M-providens
M-pumilio
M-pygmaea
M-radiata
M-ramosa
M-ramunni
M-ransoni
M-rhopalota
M-richardsi
M-robusta
M-roeweri
M-rufescens
M-rufisquei
M-russellsmithi
M-sakisimana
M-sanibarica
M-satarensis
M-seriatis
M-shelfordi
M-simoni
M-simonis
M-simplexella
M-solitaria
M-spissa
M-striatipes
M-sumana
M-tagalica
M-tayabasana
M-thaii
M-topali
M-transversa
M-tristis
M-turriformis
M-uelensis
M-uniseriata
M-uvira
M-vanessae
M-vehemens
M-vestita
M-volatilis
Myrmeblattina
Myrmechusa
Myrmechusina
Myrmecia
M-aberrans
M-simillima
Myrmeciinae(bulldog ants, etc.)
Myrmecina
M-amamiana
Myrmecinini
Myrmecoblatta
Myrmecocephalus
Myrmecocystus
M-christineae(incertae sedis)
M-colei(incertae sedis)
M-creightoni
M-depilis
M-ewarti(incertae sedis)
M-flaviceps
M-hammettensis(incertae sedis)
M-intonsus(incertae sedis)
M-kathjuli(incertae sedis)
M-kennedyi
M-koso(incertae sedis)
M-lugubris(incertae sedis)
M-melanoticus(incertae sedis)
M-melliger (Llave)(incertae sedis)
M-melliger Forel(incertae sedis)
M-mendax
M-mexicanus
M-mimicus
M-navajo(incertae sedis)
M-nequatzcatl
M-perimeces
M-placodops
M-pyramicus(incertae sedis)
M-romainei
M-semirufus(incertae sedis)
M-snellingi(incertae sedis)
M-tenuinodis(incertae sedis)
M-testaceus
M-wheeleri
M-yuma
Myrmecolacidae
Myrmecolax
M-afurcifer
M-bifurcatus
M-blickenstaffi
M-borgmeieri
M-chantaneeae
M-congoensis
M-culionensis
M-danielssoni
M-flagellatus
M-furcatus
M-genitalis
M-glaesi
M-incautus
M-kpelle
M-leleupi
M-lliberiensis
M-longipalpis
M-longipes
M-lunai
M-malayensis
M-mano
M-mymecinus
M-nietneri
M-odontognathus
M-ogloblini
M-parva
M-philippinensis
M-plantipes
M-pseudolundensis
M-rossi
M-trinidadensis
M-vardoni
Myrmecomantis atra
Myrmecomedon
Myrmecopella
Myrmecopora
M-(Amechanopora)
M-(Anatolagria)
M-(Euphorbiusa)
M-(Iliusa)
M-(Lamproxenusa)
M-(Myrmecopora)
M-(Paraxenusa)
M-(Xenusa)
Myrmecorhynchini(monophyly uncertain)
Myrmecorhynchus
M-carteri
M-emeryi
M-musgravei
M-nitidus
M-rufithorax
Myrmecosaurus
Myrmecoxenia
Myrmedonella
Myrmedoniina
Myrmedonota
Myrmelachista
Myrmeleontidae
Myrmelibia
Myrmeosaprinus(3 species)
Myrmetes(1 species)
Myrmica
M-ademonia
Myrmicaria
M-anomala
Myrmicholeva
Myrmicinae(leafcutter ants, fire ants, etc.)
Myrmicini(harvester ants, etc.)
Myrmicocrypta
M-boliviana
M-bruchi
M-buenzlii
M-collaris
M-dilacerata
M-ednaella
M-elisabethae
M-foreli
M-godmani
M-guianensis
M-infuscata
M-longinoda
M-microphthalma
M-occipitalis
M-ogloblini
M-rudiscapa
M-spinosa
M-squamosa
M-subnitida
M-triangulata
M-tuberculata
M-unidentata
M-urichi
M-weyrauchi
Myrmicotrichis
Myrmigaster
Myrmillinae
Myrmobiota
Myrmoecia
Myrmosinae
Myrmoteras
Myrmoxenus
M-adlerzi
M-africanus
M-algerianus
M-bernardi
M-birgitae
M-corsicus
M-gordiagini
M-kraussei
M-ravouxi
M-stumperi
M-tamarae
M-zaleskyi
Myrocongridae
Myroides
Myrothamnaceae
Myrsinaceae
Myrtaceae(myrtle family)
Myrtales
Mysarbia
Myscelia
M-aracynthia
M-capenas
M-cyananthe
M-cyaniris
M-ethusa
M-hypatia
M-leucocyana
M-milloi
M-orsis
Myscelus
M-amystis
M-assaricus
M-belti
M-draudti
M-epimachia
M-nobilis
M-pardalina
M-pegasus
M-perissodora
M-phoronis
M-santhilarius
Mysida
Mysmenidae
Mysolius
Mysoria
M-affinis
M-amra
M-barcastus
M-wilsoni
Mystacinidae(Short-Tailed Bats)
Mystacinobiidae
Mystacocarida
Mystaria
Mysticeti(baleen whales)
Mystrium
M-camillae
M-fallax
M-mysticum
M-oberthueri
M-oculatum
M-rogeri
M-silvestrii
M-stadelmanni
M-voeltzkowi
Mystromyinae(South African white-tailed rat)
Mystropomus
M-regularis
M-subcostatus
Mythicomyiinae
Mythomantis
M-confusa
M-gracilis
Mytilicolidae
Mytilina
Mytilinidaceae(monophyly uncertain)
Mytilinidae
Myxine
Myxinidae
Myxinikela(EXTINCT)
Myxococcales
Myxophaga
Myxopyrum
Myxosarcina
Myxosporea
Myxozoa(incertae sedis)
Myzininae
Myzopodidae(Old World Sucker-footed Bats)
Myzostomida
mactans clade
magnoliids
mannii group
marasmioid(monophyly uncertain)
microtreta group
miscellaneous fossil Mantodea(EXTINCT) (non-monophyletic)
montana group
more Callichthys species to be described
mound builders
mouse lemurs
myrmicine tribe group(monophyly uncertain)