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(05/2009)
( 105400 Species, 24100 Common names, 2500 Pictures,
12700 References, 130 Collaborators )
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Common Name
contains
begins with
ends with
is
(e.g. turtle)
Scientific Name
Genus
is
contains
begins with
ends with
(e.g. Caretta)
Species
is
contains
begins with
ends with
(e.g. caretta)
Scientific name
(e.g. Caretta caretta)
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Endeididae
Endevouridae
Endictyaceae
Endocladiaceae
Endosphaeraceae
Enemosphaeraceae
Enidae
Enoplidae
Enoplometopidae
Enoploteuthidae
Entalinidae
Entalophoridae
Entocytheridae
Entomolepididae
Entomoneidaceae
Entoniscidae
Entophylaceae
Entophysalidaceae
Eoacmaeidae
Eolepadidae
Eophliantidae
Epacteriscidae
Epialtidae
Epimeniidae
Epimeriidae
Epiphanidae
Epistomiidae
Epithemiaceae
Epitoniidae
Epizoanthidae
Epsilonematidae
Equidae
Erebonasteridae
Erebonasteridae
Erethizontidae
Ergasilidae
Erinaceidae
Eriphiidae
Erpobdellidae
Erythrosquillidae
Erythrotrichiaceae
Escarpiidae
Escharellidae
Eschrichtiidae
Esperiopsidae
Ethmodiscaceae
Eubelidae
Eublepharidae
Eubranchidae
Eucalanidae
Euchaetidae
Euchlanidae
Euchloridae
Euciroidae
Eucodoniidae
Eucopiidae
Eucotylidae
Eudactylinidae
Eudendriidae
Euglenaceae
Eugonatonotidae
Euherdmanniidae
Eukrohniidae
Eulepethidae
Eulimidae
Eumedonidae
Eunicidae
Eunicidae
Eunotiaceae
Euphausiidae
Euphausiidae
Euphrosinidae
Euphyllidae
Euphysidae
Euplectellidae
Euplokamididae
Eupyrgidae
Euretidae
Eurhamphaeidae
Eurostopodidae
Euryalidae
Eurycopidae
Eurylaimidae
Euryleptidae
Euryphoridae
Eurypygidae
Eurysquillidae
Eurystomellidae
Eurystominidae
Eusiridae
Eusiridae
Eustigmataceae
Euterpinidae
Eutreptiaceae
Exechonellidae
Exochellidae
Exocoelactiidae
Exoedicerotidae
Expanathuridae
Facelinidae
Falcidentidae
Falconidae
Falsicingulidae
Fam. indet.
family unknown
Farciminariidae
Farreidae
Fasciolariidae
Fasciolidae
Faucheaceae
Fauveliopsidae
Faviidae
Fecampiidae
Felidae
Fellodistomatidae
Fergusobiidae
Ferrussaciidae
Fessisentidae
Fibulariidae
Ficidae
Filiniidae
Fimbriidae
Fionidae
Firolidae
Fischerellaceae
Fissurellidae
Flabellidae
Flabelligeridae
Flabellinidae
Flosculariidae
Flustrellidridae
Flustridae
Formicariidae
Forskaliidae
Fosshageniidae
Fragilariaceae
Fratiidae
Fredericellidae
Fregatidae
Frenulinidae
Frieleiidae
Fringillidae
Fritillariidae
Frondiporidae
Fucaceae
Fungiacyathidae
Fungiidae
Funiculinidae
Furcellariaceae
Furipteridae
Furnariidae
Fustiariidae
Gadilidae
Gadilinidae
Gaimardiidae
Gainiaceae
Galagonidae
Galatheanthemidae
Galatheidae
Galatheidae
Galaxauraceae
Galbulidae
Galeommatidae
Galeopsidae
Gammaracanthidae
Gammarellidae
Gammaridae
Gammaroporeiidae
Ganeshidae
Gardineriidae
Gastrochaenidae
Gastrocotylidae
Gastrodelphyidae
Gastropodidae
Gastropteridae
Gavialidae
Gaviidae
Gayraliaceae
Gecarcinidae
Gekkonidae
Gekkonotrematidae
Gelidiaceae
Gelidiellaceae
Geminigeraceae
Geodiidae
Geomyidae
Geoplanidae
Gephyrocapsaceae
Gephyrothuriidae
Geryonidae
Geryonidae
Geryoniidae
Gigantapseudidae
Giganthorhynchidae
Gigantoporidae
Gigartinaceae
Giraffidae
Glacidorbidae
Glareolidae
Glaucidae
Glaucocystaceae
Glauconomidae
Glenodiniopsidaceae
Gloeobacteraceae
Gloeobotrydaceae
Gloeocystaceae
Gloeodiniaceae
Gloeopodiaceae
Gloiosiphoniaceae
Glossidae
Glossiphoniidae
Glossoscolecidae
Glyceridae
Glyceridae
Glycymerididae
Glypheidae
Glyphocrangonidae
Glyptograpsidae
Gnathiidae
Gnathophyllidae
Gnathostenetroidae
Gnathostenetroididae
Gnathostomariidae
Gnathostomatidae
Gnathostomulidae
Gobiidae
Golfingiidae
Gomontiellaceae
Gomophonemataceae
Gonactiniidae
Gonatidae
Goneplacidae
Goniaceae
Goniadidae
Goniasteridae
Goniasteridae
Gonieolididae
Goniodomataceae
Goniodorididae
Goniomonadaceae
Goniopectinidae
Goniotrichaceae
Gonodactylidae
Gonyaulacaceae
Gordiidae
Gorgocephalidae
Gorgoderidae
Gorgoniidae
Gorgonocephalidae
Gossleriellaceae
Gracilariaceae
Graffillidae
Grantiidae
Grapsidae
Grimpoteuthidae
Gruidae
Gryphaeidae
Guitarridae
Guyniidae
Gymnodiniaceae
Gymnodorididae
Gymnomeniidae
Gymnophallidae
Gymnophthalmidae
Gynodiastylidae
Gyrodactylidae
Habrotrochidae
Hadromastacidae
Hadziidae
Haeckeliidae
Haemadipsidae
Haematococcaceae
Haematoloechidae
Haemeschariaceae
Haemopidae
Haimeidae
Halacaridae
Halammohydridae
Halcampidae
Halcampoididae
Halcuriidae
Halechiniscidae
Haleciidae
Haliactiidae
Halichondriidae
Halicreatidae
Halimedaceae
Halimedusidae
Haliotidae
Haliotididae
Halipegidae
Haliplanellidae
Haliplectidae
Halipteridae
Halisarcidae
Hallangidae
Haloceratidae
Haloclavidae
Halocypridae
Halocyprididae
Halocyprididae
Halopappaceae
Halophilosciidae
Halopterididae
Halosiphonaceae
Halosphaeraceae
Halymeniaceae
Hamacanthidae
Haminoeidae
Hancockiidae
Hanleyidae
Haplognathiidae
Haplomunnidae
Haploniscidae
Haploporidae
Haploposthiidae
Haplosplanchnidae
Haplotaxidae
Haplotrematidae
Haplozoaceae
Harmotrematidae
Harpacticidae
Harpidae
Harrimaniidae
Hartmaniellidae
Hasstilesiidae
Hatschekiidae
Haustoriidae
Haywardozoontidae
Hebellidae
Hekelidae
Heleophrynidae
Helicarionidae
Helicidae
Helicinidae
Helicodiscidae
Helioporidae
Heliornithidae
Helminthoglyptidae
Helodermatidae
Hemiarthridae
Hemiasterellidae
Hemiasteridae
Hemiaulaceae
Hemicytheridae
Hemidiniaceae
Hemidiscaceae
Hemidonacidae
Hemieuryalidae
Hemimeniidae
Hemioniscidae
Hemipeltaceae
Hemiprocnidae
Hemiselmidaceae
Hemisotidae
Hemisquillidae
Hemithyrididae
Hemiuridae
Hepatidae
Heptaxodontidae
Heroidae
Heronimidae
Herpestidae
Herpyllobiidae
Hesionidae
Hesionidae
Heteracanthocephalidae
Heteralepadidae
Heteraxinidae
Heteroderidae
Heterodiniaceae
Heterodorididae
Heterogloeaceae
Heterohabditidae
Heteroherpiidae
Heteromyidae
Heteropediaceae
Heterophyidae
Heteropiidae
Heteroporidae
Heterorhabdidae
Heterosigmataceae
Heterothyonidae
Hexabothriidae
Hexabranchidae
Hexacrobylidae
Hexamitaceae
Hexarthridae
Hexostomatidae
Hiantoporidae
Hiatellidae
Hibberdiaceae
Hildenbrandiaceae
Hilieaceae
Himanthaliaceae
Himerometridae
Hincksinidae
Hippidae
Hippolytidae
Hippolytidae
Hipponicidae
Hippopodiidae
Hippopodinidae
Hippoponellidae
Hippoporidridae
Hippoporinidae
Hippopotamidae
Hippothoidae
Hirudinellidae
Hirudinidae
Hirundinidae
Histioteuthidae
Histriobdellidae
Hofsteniidae
Holidoteidae
Holognathidae
Holopediidae
Holothuriidae
Holozoidae
Homalometridae
Hominidae
Homolidae
Homolodromiidae
Hoplolaimidae
Hoploplanidae
Hormathiidae
Hormosiraceae
Hormotilaceae
Hubrechtidae
Humboldtianidae
Huntemanniidae
Hutchinsoniellidae
Hyaenidae
Hyalellidae
Hyalidae
Hyalodiscaceae
Hyalogyrinidae
Hyalonematidae
Hydractiniidae
Hydridae
Hydrobatidae
Hydrobiidae
Hydrocenidae
Hydrochaeridae
Hydrococcaceae
Hydrocorynidae
Hydrodictyaceae
Hydromylidae
Hydrophiidae
Hydruraceae
Hyellaceae
Hygromiidae
Hylidae
Hylobatidae
Hymedesmiidae
Hymeniacidonidae
Hymenoceridae
Hymenomonadaceae
Hynobiidae
Hyocrinidae
Hyperiidae
Hyperiopsidae
Hyperoliidae
Hypneaceae
Hypnomonadaceae
Hypocolidae
Hypoechinorhynchidae
Hyponeoidae
Hypophorellidae
Hypsimetopodidae
Hyssuridae
Hystricidae
Ibiidae
Iblidae
Ichthyophiidae
Ichthyotomidae
Icteridae
Idioctopodidae
Idiosepiidae
Idoteidae
Iguanidae
Illiosentidae
Ilyocyprididae
Imeroherpiidae
Immergentiidae
Inachidae
Inachoididae
Incertae sedis (Anthoathecata)
Incertae sedis (Leptothecata)
Incertae sedis (Scleractinia)
Incerta_sedis
Indicatoridae
Indridae
Ingolfiellidae
Iniidae
Inversiulidae
Iosactiidae
Iospilidae
Iotonchiidae
Iotonchusidae
Iotrochotidae
Iphimediidae
Iphitimidae
Irciniidae
Irenidae
Irmaosidae
Ironidae
Isaeidae
Isanthidae
Ischnochitonidae
Ischnochitonidae
Ischnomesidae
Ischnomesidae
Ischyroceridae
Ischyroceridae
Ishigeaceae
Isididae
Isochrysidaceae
Isocrinidae
Isodiametridae
Isodictyidae
Isognomonidae
Isolaimiidae
Isoparorchiidae
Isophelliidae
Isoraphiniidae
Ituridae
Iulopididae
Jacanidae
Jakobaceae
Janirellidae
Janiridae
Janolidae
Janthinidae
Jenkinidae
Joeropsididae
Joubiniteuthidae
Jubilariidae
Juliidae
Kadosactidae
Kalliapseudidae
Kallymenaceae
Kallymeniaceae
Kantharellidae
Katianiridae
Keliidae
Kelleriidae
Kelliellidae
Kelliidae
Kentrodorididae
Keroeididae
Keuphyliidae
Kingenidae
Kinosternidae
Kirchenpaueriidae
Kishinouyeidae
Kiwaidae
Klebsormidiaceae
Kogiidae
Koleolepadidae
Kolkwitziellaceae
Kophobelemnidae
Korethrasteridae
Kornmanniaceae
Kowalewskiidae
Kraussinidae
Krithidae
Krohnittellidae
Krohnittidae
Kroyeriidae
Kyopodidae
Lacertidae
Lacydoniidae
Laetmogonidae
Laevidentaliidae
Laevipilinidae
Lafoeidae
Lafystiidae
Laganidae
Laingiidae
Lamellariidae
Lamellibrachiidae
Lamellisabellidae
Lametilidae
Laminariaceae
Lamippidae
Lampeidae
Lampoctenidae
Lampritrematidae
Lampropidae
Lanceolidae
Laniidae
Lanthanotidae
Laodiceidae
Laomediidae
Laonastidae
Laophontidae
Laophontidae
Laophontopsidae
Laphystiopsidae
Laqueidae
Laridae
Lasaeidae
Laternulidae
Laterotrematidae
Latocestidae
Latreilliidae
Latrunculiidae
Lauderiaceae
Lauratonematidae
Lauridae
Lecanidae
Lecithodendriidae
Leguminocythereididae
Leiopathidae
Leiopelmatidae
Lekythoporidae
Lelapiidae
Lemaneaceae
Lemuridae
Lepadellidae
Lepadidae
Lepetellidae
Lepetidae
Lepetodrilidae
Lepidodasyidae
Lepidomeniidae
Lepidomysidae
Lepidoteuthidae
Lepocreadiidae
Leporidae
Leptanthuridae
Leptastacidae
Leptestheriidae
Leptoceridae
Leptocheliidae
Leptocheliidae
Leptochitonidae
Leptochitonidae
Leptocylindraceae
Leptocytheridae
Leptodactylidae
Leptodoridae
Leptognathiidae
Leptolaimidae
Leptonchidae
Leptonidae
Leptoplanidae
Leptopontiidae
Leptosomatidae
Leptosomidae
Leptotyphlopidae
Lernaeidae
Lernaeodiscidae
Lernaeopodidae
Lernaeosoleidae
Lernanthropidae
Lessoniaceae
Lestrigonidae
Leucaltidae
Leucascidae
Leucettidae
Leucochloridiidae
Leucochloridiomorphidae
Leuconidae
Leucopsacidae
Leucosiidae
Leucosoleniidae
Leucotheidae
Leucothoidae
Levidoridae
Liagoraceae
Lichenoporidae
Lichomolgidae
Licmophoraceae
Ligiidae
Liljeborgiidae
Limacidae
Limacinidae
Limapontiidae
Limidae
Limifossoridae
Limnactiniidae
Limnadiidae
Limnephilidae
Limnocytheridae
Limnodynastidae
Limnognathidae
Limnoriidae
Limopsidae
Limulidae
Lindiidae
Lineidae
Lineolariidae
Lingulidae
Linhomoeidae
Linuchidae
Liolopidae
Lipkeidae
Liponematidae
Lissorchiidae
Lithodesmiaceae
Lithodidae
Lithodidae
Lithoglyptidae
Lithothelestidae
Lithotryidae
Litiopidae
Littorinidae
Lobatolampeidae
Lobatovitelliovariidae
Lobonematidae
Loefgreniaceae
Loimoidae
Loliginidae
Lomanotidae
Lomentariaceae
Longidoridae
Longipediidae
Longosomatidae
Lopadorhynchidae
Lopadorrhynchidae
Lophodiniaceae
Lophogastridae
Lophopodidae
Loridae
Loriellaceae
Lottiidae
Louriniidae
Lovenellidae
Loveniidae
Loxocemidae
Loxoconchidae
Loxosomatidae
Lubbockiidae
Lubbockiidae
Lucernariidae
Lucicutiidae
Luciferidae
Lucinidae
Luidiidae
Luidiidae
Lumbriculidae
Lumbrineridae
Luteuthidae
Lybiidae
Lycaeidae
Lycaeopsidae
Lychnorhizidae
Lycoteuthidae
Lymnaeidae
Lynceidae
Lyonsiellidae
Lyonsiidae
Lyrellaceae
Lyroctenidae
Lysianassidae
Lysianassidae
Lysiosquillidae
Mabiaramidae
Macandrewiidae
Maccabeidae
Macellomeniidae
Macrochironidae
Macrocyprididae
Macrodasyidae
Macroderoididae
Macromaxillocarididae
Macropodidae
Macroporidae
Macroscelididae
Macrostomidae
Macrostylidae
Macrothricidae
Macrovalvitrematidae
Mactridae
Madrellidae
Magelonidae
Magilidae
Magnapinnidae
Majidae
Majidae
Malacobdellidae
Malagazziidae
Maldanidae
Maldanidae
Maldanidae
Malleidae
Malletiidae
Mallomonadaceae
Maluridae
Mamiellaceae
Mamilloporidae
Manidae
Mantellidae
Manzanellidae
Margaritiferidae
Margelopsidae
Marginellidae
Maseniidae
Mastigiidae
Mastigocladaceae
Mastigocladopsidaceae
Mastigoteuthidae
Mastogloiaceae
Mathildidae
Maupasinidae
Mazocraeidae
Meandrinidae
Mecynoceridae
Mecynoeciidae
Mecynostomidae
Megacalanidae
Megadermatidae
Megaladapidae
Megalaimidae
Megalonchidae
Megalonychidae
Megaluropidae
Megaperidae
Megapodiidae
Megapontiidae
Megapontiidae
Megaspiridae
Megathyrididae
Megomphicidae
Megophryidae
Meiomeniidae
Melanocharitidae
Melicertidae
Melinnacheridae
Meliphagidae
Melithaeidae
Melitidae
Mellitidae
Melongenidae
Melosiraceae
Melphidippidae
Membranicellariidae
Membraniporidae
Menippidae
Menuridae
Mephitidae
Merismopediaceae
Meristocotylidae
Mermithidae
Meropidae
Mertensiidae
Merulinidae
Mesocoeliidae
Mesodesmatidae
Mesogammaridae
Mesognathariidae
Mesometridae
Mesoniscidae
Mesosignidae
Mesosporaceae
Mesostigmataceae
Mesotaeniaceae
Mestiornithidae
Metachaetodermatidae
Metaniidae
Metapseudidae
Metastrongylidae
Metidae
Metridiidae
Metridinidae
Metschnikowiidae
Micrabaciidae
Micractiniaceae
Microbiotheriidae
Microbothriidae
Microcerberidae
Microchaetaceae
Microcionidae
Microcodidae
Microcotylidae
Microcystaceae
Microhedylidae
Microhydrulidae
Microhylidae
Microlaimidae
Microparasellidae
Microphallidae
Microphasmatidae
Micropontiidae
Microporellidae
Microporidae
Microscaphidiidae
Microsporaceae
Microstomidae
Mictosomatidae
Milacidae
Milleporidae
Mimonectidae
Mimosellidae
Minchinellidae
Minicheviellidae
Minyadidae
Miraciidae
Miraciidae
Mischococcaceae
Misophriidae
Misophriidae
Mithracidae
Mithrodiidae
Mitridae
Mitrocomidae
Modulidae
Moerisiidae
Molgulidae
Molossidae
Molpadiidae
Momotidae
Monascidae
Monhysteridae
Moniliformidae
Monobrachiidae
Monobryozoontidae
Monocelididae
Monocotylidae
Monodontidae
Monodopsidaceae
Mononchidae
Mononchulidae
Monoplacophoridae
Monoposthiidae
Monorchiidae
Monorhaphididae
Monosigaceae
Monostromataceae
Monstrillidae
Montacutidae
Mopaliidae
Moreauiidae
Mormonillidae
Mormoopidae
Moschidae
Mucronellidae
Multipeniatidae
Munnidae
Munnopsidae
Munnopsididae
Muricidae
Muridae
Murrayonidae
Muscicapidae
Musophagidae
Mussidae
Mustelidae
Mycalidae
Mycetomorphidae
Mychodeaceae
Mychodeophyllaceae
Myicolidae
Myidae
Myobatrachidae
Myochamidae
Myoxidae
Myriaporidae
Myriopathidae
Myriotrochidae
Myriozoidae
Myrmecobiidae
Myrmecophagidae
Mysidae
Mystacinidae
Mytilicolidae
Mytilidae
Mytilidae
Mytilinidae
Myxillidae
Myxochloridaceae
Myzopodidae
Myzostomidae
Naccariaceae
Nacellidae
Naididae
Najnidae
Nanaloricidae
Nannastacidae
Nannoniscidae
Nannosquillidae
Nanophyetidae
Naobranchiidae
Nasikabatrachidae
Nasitrematidae
Nassariidae
Natalidae
Naticidae
Nausithoidae
Nautilidae
Nautiliniellidae
Naviculaceae
Nebaliidae
Nebaliidae
Nebaliopsididae
Nectariniidae
Nectonematidae
Nectonemertidae
Neidiaceae
Neilonellidae
Nemanthidae
Nemastomataceae
Nematocarcinidae
Nematocarcinidae
Nemertodermatidae
Neobalaenidae
Neobrachylepadidae
Neobradyidae
Neocentrophyidae
Neodasyidae
Neoechinorhynchidae
Neogosseidae
Neolampadidae
Neolepetopsidae
Neoleptonidae
Neomegamphopidae
Neomeniidae
Neomorphidae
Neomphalidae
Neopeltidae
Neopilinidae
Neotanaidae
Neoteuthidae
Neotylenchidae
Neoverrucidae
Neoverrucidae
Neozoanthidae
Nephropidae
Nephropidae
Nephroselmidaceae
Nephtheidae
Nephtyidae
Neptuneidae
Nereicolidae
Nereidae
Nereididae
Nerillidae
Neritidae
Neritopsidae
Nesophontidae
Nevadneidae
Nexilidae
Nichollsiidae
Nicothoidae
Nidaliidae
Niobiidae
Niphatidae
Nizymeniaceae
Noctilionidae
Noctilucaceae
Noelaerhabdaceae
Noetiidae
Nolellidae
Normanellidae
Nossidae
Nostocaceae
Nostochopsidaceae
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
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Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
Not assigned
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Not assigned
Not assigned
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Notarchidae
Notheiaceae
Notobranchaeidae
Notocotylidae
Notodelphyidae
Notodorididae
Notommatidae
Notoryctidae
Nototanaidae
Nototanaidae
Nucinellidae
Nuculanidae
Nuculidae
Nudacotylidae
Nullosetigeridae
Numididae
Nycteridae
Nyctibiidae
Nygolaimellidae
Nygolaimidae
Nymphonidae
Obtortionidae
Oceanidae
Ochetosomatidae
Ochlesidae
Ochotonidae
Ochromonadaceae
Ochrosphaeraceae
Octacnemidae
Octineonidae
Octocannoididae
Octodontidae
Octolabeidae
Octopicolidae
Octopodidae
Octopoteuthidae
Oculinidae
Ocypodidae
Ocyropsidae
Ocythoidae
Odiidae
Odobenidae
Odontasteridae
Odontodactylidae
Odontopharyngidae
Odontophoridae
Odontorhabditidae
Oedicerotidae
Oedicerotidae
Oedogoniaceae
Oenonidae
Oesophagicolidae
Ogyrididae
Oikopleuridae
Oithonidae
Oleacinidae
Olibrinidae
Oligacanthorhynchidae
Oligobrachiidae
Olindiasidae
Olindiidae
Olividae
Omalogyridae
Ommastrephidae
Omniglyptidae
Omphalometridae
Oncaeidae
Oncaeidae
Onchidiidae
Onchidorididae
Oncholaimidae
Onchulidae
Oncobothriidae
Oncousoeciidae
Oniscidae
Onuphidae
Onychocellidae
Onychognathiidae
Onychoteuthidae
Oocystaceae
Oodiniaceae
Opailaimidae
Opecoelidae
Opheliidae
Ophiacanthidae
Ophiacanthidae
Ophiacanthidae
Ophiactidae
Ophidiasteridae
Ophiocomidae
Ophiocomidae
Ophiocytaceae
Ophiodermatidae
Ophiodermatidae
Ophiolepididae
Ophioleucidae
Ophiomyxidae
Ophionereididae
Ophiothrichidae
Ophiothricidae
Ophiuridae
Ophiuridae
Opisidae
Opisthocomidae
Opisthogonimidae
Opistholebetidae
Opisthorchiidae
Opisthoteuthidae
Opisthotrematidae
Opistocystidae
Oplophoridae
Oractiidae
Orbiniidae
Orbiniidae
Orbiniidae
Orbitestellidae
Orbitestellidae
Orchipedidae
Orchistomatidae
Oreasteridae
Oregoniidae
Oreohelicidae
Ornithorhynchidae
Orthonychidae
Orthopsyllidae
Orthoseiraceae
Orycteropodidae
Oscillatoriaceae
Ostreidae
Ostreobiaceae
Ostreopsidaceae
Otariidae
Otididae
Otinidae
Otocelididae
Otohydridae
Otomesostomidae
Otoplanidae
Ototyphlonemertidae
Ovariopteridae
Ovulidae
Oweniidae
Oxycephalidae
Oxydiridae
Oxynaspididae
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