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Nematodes Genera M to O	Family	Putative Feeding	c-p Group	Feeding Group	Functional Guild	Internal Code
Maciela	Molineidae	animal parasites
Macramphida	Drilonematidae	animal parasites
Macrodontium	Microlaimidae	marine nematodes
Macrolaimellus	Cephalobidae	bacteria feeders	2	3	b2	G2634mnu.htm
Macrolaimus	Chambersiellidae	bacteria feeders	2	3	b2	G917mnu.htm
Macronchus	Leptosomatidae	marine nematodes
Macropicola	Chabertiidae	animal parasites
Macroponema	Chabertiidae	animal parasites
Macropostrongyloides	Chabertiidae	animal parasites
Macropostrongylus	Chabertiidae	animal parasites
Macrostrongylus	Heligmonellidae	animal parasites				G3632mnu.htm
Macrotrophurus	Dolichodoridae	plant feeders	3	1	h3	G071mnu.htm
Mactinolaimus	Actinolaimidae	omnivores	5	8	o5	G7622mnu.htm
Macuahuitloides	Molineidae	animal parasites
Madafilaroides	Angiostrongylidae	animal parasites
Madangiostrongylus	Angiostrongylidae	animal parasites
Mainspinostrongylus	Molineidae	animal parasites
Makatinus	Aporcelaimidae	omnivores	5	8	o5	G739mnu.htm0\
Malaistrongylus	Heligmonellidae	animal parasites
Malakhovia	Andrassyidae	marine nemayodes				G5921mnu.htm
Malaspinanema	Thelastomatidae	animal parasites
Malayometastrongylus	Angiostrongylidae	animal parasites
Maldivea	Oxystominidae	marine/freshwater nematodes
Malekus	Nordiidae	omnivores	4	8	o4	G7136mnu.htm
Malenchus	Tylenchidae	plant feeders	2	1	h2	G072mnu.htm
Malvinema	Heligmonellidae	animal parasites
Malvinia	Ungellidae	animal parasites
Mammaidula	Heligmonellidae	animal parasites
Mammomonogamus	Syngamidae	animal parasites
Manganonema	Xyalidae	marine nematodes				G388mnu.htm
Mansonella	Onchocercidae	animal parasites
Manunema	Leptolaimidae	bacteria feeders	3	3	b3
Margaronchuloides	Mylonchulidae	predators	4	5	p4
Margarochulus	Mylonchulidae	predators	4	5	p4
Margollus	Tylencholaimellidae	fungus feeders	4	2	f4
Margonema	Axonolaimidae	marine nematodes
Marimermis	Marimermithidae	marine parasites	5	7	p5	G2002mnu.htm
Mariostrongylus	Protosrongylidae	animal parasites
Marisalbinema	Xyalidae	marine nematodes
Marshallagia	Haemonchidae	animal parasites
Marsupostrongylus	Angiostrongylidae	animal parasites
Martininema	Aphelenchoididae	plant feeders	2	2	h2	G2202mnu.htm
Marylynnia	Cyatholaimidae	marine nematodes
Maseria	Muspiceidae
Mastophorus	Spirocercidae	animal parasites
Matthesonema	Rhabditidae	bacteria feeders	1	3	b1	G2251mnu.htm
Maupasina	Maupasinidae	animal parasites
Mawsonema	Heligmonellidae	animal parasites
Maxomystrongylus	Heligmonellidae	animal parasites
Maxvachonia	Cosmocercidae	animal parasites
Mazamastrongylus	Haemonchidae	animal parasites
Mbaisonema	Chabertiidae	animal parasites
Mbanema	Drilonematidae	animal parasites
Mecistocirrus	Haemonchidae	animal parasites
Mediolaimus	Rhabdolaimidae	bacteria feeders	3	3	b3
Megacooperia	Cooperiidae	animal parasites
Megadesmolaimus	Linhomoeidae	marine nematodes
Megadraconema	Draconematidae	marine nematodes
Megaeurostomina	Enchelidiidae	marine nematodes
Megalobotrachonema	Kathlaniidae	animal parasites
Megamphidelus	Amphidelidae	bacteria feeders	4	3	b4
Mehdilaimus	Axonolaimidae	marine nematodes
Mehdinema	Mehdinematidae	animal parasites
Meiodorus	Dolichodoridae	plant feeders	3	1	h3	G157mnu.htm
Meloidodera	Heteroderidae	plant feeders	3	1	h3	G073mnu.htm
Meloidoderella	Heteroderidae	plant feeders	3	1	h3	G074mnu.htm
Meloidoderita	Tylenchulidae	plant feeders	3	1	h3	G075mnu.htm
Meloidogyne	Heteroderidae	plant feeders	3	1	h3	G076mnu.htm
Meloinema	Heteroderidae	plant feeders	3	1	h3	G077mnu.htm
Melolonthinimermis	Mermithidae	animal parasites
Melomystrongylus	Heligmonellidae	animal parasites
Mentecle	Hystrignathidae	animal parasites
Merlinius	Merliniidae	plant feeders	3	1	h3	G078mnu.htm
Mermis	Mermithidae	animal parasites
Mertensinema	Molineidae	animal parasites
Mesacanthion	Thoracostomopsidae	marine predators
Mesacanthoides	Thoracostomopsidae	marine predators
Mesamidostomum	Trichostrongylidae	animal parasites
Mesidionema	Mesidionematidae	animal parasites
Mesoanguina	Anguinidae	plant feeders	2	1	h2	G0061mnu.htm
Mesocriconema	Criconematidae	plant feeders	3	1	h3	G158mnu.htm
Mesodolichodera	Heteroderidae	plant feeders	3	1	h3	G0141mnu.htm
Mesodorylaimellus	Dorylaimellidae	plant feeders	5	1	h5
Mesodorylaimus	Dorylaimidae	omnivores	5	8	o5	G703mnu.htm
Mesomermis	Mermithidae	animal parasites
Mesonema	Drilonematidae	animal parasites
Mesorhabditis	Rhabditidae	bacteria feeders	1	3	b1	G226mnu.htm
Mesotheristus	Xyalidae	marine nematodes				G386mnu.htm
Mesotobrilus	Tobrilidae	predators	3	5	p3
Metaraeolaimoides	Diplopeltidae	marine nematodes
Metachromadora	Desmodoridae	marine nematodes				G53210mnu.htm
Metachromadoroides	Desmodoridae	marine nematodes				G5328mnu.htm
Metacomesoma	Comesomatidae	marine nematodes
Metacrobeles	Cephalobidae	bacteria feeders	2	3	b2	G2632mnu.htm
Metacrolobus	Cephalobidae	bacteria feeders	2	3	b2	G2633mnu.htm
Metactinolaimus	Actinolaimidae	omnivores	4	8	o4	G7621mnu.htm
Metacyatholaimus	Cyatholaimidae	marine nematodes
Metacylicolaimus	Leptosomatidae	marine nematodes
Metadasynemella	Ceramonematidae	marine nematodes
Metadasynemoides	Ceramonematidae	marine nematodes
Metadesmodora	Desmodoridae	marine nematodes
Metadesmolaimus	Xyalidae	marine nematodes
Metadiplogaster	Diplogastridae	bacteria feeders	1	3	b1	G325mnu.htm
Metadorylaimus	Tylencholaimidae	fungus feeders	4	2	f4	G7914mnu.htm
Metaglochinema	Epsilonematidae	marine nematodes
Metalaimus	Linhomoeidae	marine nematodes
Metalinhomoeus	Linhomoeidae	marine nematodes				G4012mnu.htm
Metamphidelus	Amphidelidae	bacteria feeders	4	3	b4	G636mnu.htm
Metaparasitylenchus	Allantonematidae	animal parasites
Metaphanoderma	Phanodermatidae	marine nematodes
Metaporcelaimus	Aporcelaimidae	omnivores	5	8	o5	G738mnu.htm
Metaporoncholaimus	Oncholaimidae	marine nematodes
Metarhabditis	Rhabditidae	bacteria feeders	1	3	b1	G2272mnu.htm
Metasabatieria	Comesomatidae	marine nematodes
Metasphaerolaimus	Sphaerolaimidae	marine nematodes
Metastrongylus	Metastrongylidae	animal parasites
Metateratocephalus	Teratocephalidae	bacteria feeders	3	3	b3	G313mnu.htm
Metathelazia	Pneumospiruridae	animal parasites
Metaxonchium	Belondiridae	plant feeders	5	1	h5	G756mnu.htm
Metenoploides	Thoracostomopsidae	marine predators
Metepsilonema	Epsilonematidae	marine nematodes	4	4	e4	G902mnu.htm
Meteterakis	Heterakidae	animal parasites
Metheligmonella	Heligmonellidae	animal parasites
Metoncholaimus	Oncholaimidae	marine nematodes
Metonyx	Desmodoridae	marine nematodes
Mexiconema	Daniconematidae	aanimal parasites
Meylia	Meyliidae	marine nematodes				G418mnu.htm
Meylis	Leptonchidae	fungus feeders	4	2	f4	G7842mni.htm
Meylonema	Tylencholaimidae	fungus feeders	4	2	f4	G7902mnu.htm
Micatonchus	Anatonchidae	predators	4	5	p4
Micoletzkya	Neodiplogastridae	bacteria feeders	1	3	b1	G3233mnu.htm
Micoletzkyia	Phanodermatidae	marine nematodes				G5926mnu.htm
Miconchus	Iotonchidae	predators	4	5	p4	G659mnu.htm
Micracanthonchus	Linhomoeidae	marine nematodes
Microdorylaimus	Qudsianematidae	predators	4	5	p4	G726mnu.htm
Microlaimus	Microlaimidae	bacteria feeders	3	3	b3	G915mnu.htm
Micropleura	Micropleuridae	animal parasites
Microtetrameres	Tetrameridae	animal parasites
Miculenchus	Tylenchidae	plant feeders	2	1	f2	G079mnu.htm
Minolaimus	Cyatholaimidae	marine nematodes
Minutostrongylus	Cooperiidae	animal parasites
Miodorylaimus	Dorylaimidae	omnivores	4	8	o4	G6882mnu
Miranema	Mydonomidae	omnivores	4	8	o4	G7881mnu.htm
Mirolaimus	Bathyodontidae	predators	4	5	p5
Mirzaiella	Travassosinematidae	animal parasites
Misticius	Sphaerulariidae	insect associates
Mitoaxonchium	Swangeriidae	omnivores				G9013mnu.htm
Mitranema	Tylenchidae	plant feeders	2	1	h2	G080mnu.htm
Moaciria	Heterakidae	animal parasites
Moennigia	Molineidae	animal parasites
Moguranema	Molineidae	animal parasites
Molgolaimus	Desmodoridae	marine nematodes
Molineus	Molineidae	animal parasites
Molinostrongylus	Molineidae	animal parasites
Molnaria	Skrjabillanidae	animal parasites
Mongolotheristus	Xyalidae	marine nematodes
Monhystera	Monhysteridae	bacteria feeders	1	3	b1	G371mnu.htm
Monhysteroides	Linhomoeidae	marine nematodes
Monhystrella	Monhysteridae	bacteria feeders	1	3	b1	G374mnu.htm
Monhystris	Xyalidae	marine nematodes
Monhystrium	Monhysteridae	marine nematodes				G376mnu.htm
Monilonema	Chabertiidae	animal parasites
Monobutlerius	Diplogastridae	bacteria feeders	1	3	b1	G324mnu.htm
Monodontella	Ancylostomatidae
Mononchoides	Neodiplogastridae	eucaryote feeders	1	6	e1	G334mnu.htm
Mononchulus	Mononchulidae	predators	4	5	p4	G663mnu.htm
Mononchus	Mononchidae	predators	4	5	p4	G655mnu.htm
Monoposthia	Monoposthiidae
Monoposthioides	Monoposthiidae
Monotrichodorus	Trichodoridae	plant feeders	3	1	h3	G147mnu.htm
Mooleptus	Gnathostomatidae	animal parasites
Morasia	Mydonomidae	omnivores	4	8	o4	G7812mnu.htm
Moravecia	Guyanemidae	animal parasites				G9413mnu.htm
Morgascaridia	Ascaridiidae
Morlaxia	Diplopeltidae	marine nematodes
Morulaimus	Dolichodoridae	plant feeders	3	1	h3	G082mnu.htm
Moshajia	Crateronematidae	omnivores	4	8	o4	G743mnu.htm
Mudwigglus	Diplopeltidae	marine nematodes
Muellerius	Protosrongylidae	animal parasites				G9327mnu.htm
Mukazia	Tylenchidae	plant feeders	2	1	h2	G083mnu.htm
Multicaecum	Heterocheilidae	animal parasites				G1087mnu.htm
Mulveyellus	Iotonchidae	predators	4	5	p4	G6594mnu.htm
Mumtazium	Tylencholaimidae	fungus feeders	4	2	f4	G7961mnu.htm
Murielus	Molineidae	animal parasites
Murshidia	Strongylidae	animal parasites
Muspicea	Muspiceidae	animal parasites				G825mnu.htm
Myctolaimus	Cylindrocorporidae	insect associates
Mydonomus	Mydonomidae	omnivores	4	8	o4	G7813mnu.htm
Myenchus	Myenchidae	animal parasites
Myleusnema	Kathlaniidae	animal parasites
Mylodiscoides	Qudsianematidae	predators	4	5	p4	G7262mnu.htm
Mylodiscus	Qudsianematidae	predators	4	5	p4	G7261mnu.htm
Mylonchulus	Mylonchulidae	predators	4	5	p4	G653mnu.htm
Myolaimus	Myolaimidae	bacteria feeders	2	3	b2	G291mnu.htm
Myoryctes	Myenchidae	animal parasites
Myrmeconema	Tetradonematidae	animal parasites
Nacobbodera	Heteroderidae	plant feeders	3	1	h3	G084mnu.htm
Nacobbus	Pratylenchidae	plant feeders	3	1	h3	G085mnu.htm
Nagelus	Merliniidae	plant feeders	3	1	h3	G086mnu.htm
Namaquanema	Dorylaimidae	omnivora	4	8	o4	G6881mnu.htm
Namibinema	Axonolaimidae	marine nematodes
Nanidorus	Trichodoridae	plant feeders	3	1	h3	G0971mnu.htm
Nannolaimoides	Cyatholaimidae	marine nematodes
Nannolaimus	Neotonchidae	marine nematodes
Nasistrongylus	Herpetostrongylidae	animal parasites
Necator	Ancylostomatidae	animal parasites				G962mnu.htm
Nemabia	Encholaimidae	fungus feeders	4	2	f4
Nemanema	Oxystominidae	marine/freshwater nematodes
Nemanoke	Mesidionematidae	animal parasites				G1517mnu.htm
Nematodirella	Molineidae	animal parasites
Nematodiroides	Molineidae	animal parasites
Nematodirus	Molineidae	animal parasites				G356mnu.htm
Nemhelix	Cosmocercidae	animal parasites
Neoactinolaimus	Actinolaimidae	omnivores	4	8	o4	G762mnu.htm
Neoalloionema	Alloionematidae	bacteria feeders	1	3	b1	G232mnu.htm
Neobakernema	Criconematidae	plant feeders	3	1	h3	G0171mnu.htm
Neocamacolaimus	Camacolaimidae	marine nematodes				G4326mnu.htm
Neocamallanus	Camallanidae	animal parasites
Neochromadora	Hypodontolaimidae	bacteria feeders	3	3	b3	G477mnu.htm
Neocooperia	Trichostrongylidae	animal parasites
Neocucullanus	Cucullanidae	animal parasites
Neodiplogaster	Neodiplogastridae	bacteria feeders	1	3	b1	G3232mnu.htm
Neodiplopeltula	Diplopeltidae	marine nematodes				G449mnu.htm
Neoditylenchus	Anguinidae	plant feeders	2	1	h2
Neodolichodorus	Dolichodoridae	plant feeders	3	1	h3	G087mnu.htm
Neodolichorhynchus	Telotylenchidae	plant feeders	3	1	h3	G156mnu.htm
Neoentomelas	Rhabdiasidae	animal parasites
Neohalenchus	Anguinidae	plant feeders	2	1	h2
Neoheligmonella	Heligmonellidae	animal parasites
Neohilgertia	Oxyuridae	animal parasites
Neolobocriconema	Criconematidae	plant feeders	3	1	h3	G092mnu.htm
Neolordellonema	Crateronematidae	omnivores	4	8	o4	G7432mnu.htm
Neometadorylaimus	Tylencholaimidae	fungus feeders	4	2	f4	G7911mnu.htm
Neomisticius	Anguinidae	insect associates				G1101mnu.htm
Neomurshidia	Strongylidae	animal parasites
Neonyx	Desmodoridae	marine nematodes
Neoomeia	Quimperiidae	animal parasites
Neoparaseuratum	Quimperiidae	animal parasites
Neoparasitylenchus	Allantonematidae	animal parasites
Neophilometroides	Philometridae	animal parasites
Neopsilenchus	Tylenchidae	plant feeders	2	1	h2	G088mnu.htm
Neoraillietnema	Cosmocercidae	animal parasites
Neorhabditis	Rhabditidae	bacteria feeders	1	3	b1
Neorhabditostomum	Chabertiidae	animal parasites
Neosteinernema	Steinernematidae	bacteria feeders	2	3	b2	G833mnu.htm
Neostrongyloides	Dioctophymatidae	animal parasites
Neostrongylus	Protosrongylidae	animal parasites
Neoterranova	Anisakidae	animal parasites				G9106mnu.htm
Neothada	Tylenchidae	plant feeders	2	1	h2	G089mnu.htm
Neothonchus	Neotonchidae	marine nematodes
Neotobrilus	Tobrilidae	predators	3	5	p3	G602mnu.htm
Neotonchoides	Neotonchidae	marine nematodes
Neotonchus	Neotonchidae	marine nematodes
Neotylocephalus	Plectidae	bacteria feeders	2	3	b2	G426mnu.htm
Nesomystrongylus	Heligmonellidae	animal parasites
Neurella	Camacolaimidae	marine nematodes
Nevadanema	Dorylaimidae	omnivores	4	8	o4	G730mnu.htm
Nicascolaimus	Axonolaimidae	marine nematodes
Nicollina	Nicollinidae	animal parasites				G3591mnu.htm
Nigronchus	Mononchidae	predators	4	5	p4
Nijhoffia	Linhomoeidae	marine nematodes
Nilonema	Dracunculidae	animal parasites
Nimigula	Belondiridae	plant feeders	5	1	h5	G758mnu.htm
Nippostrongylus	Heligmonellidae	animal parasites
Nochtia	Molineidae	animal parasites
Noffsingeria	Meyliidae	marine nematodes				G420mnu.htm
Nothacrobeles	Cephalobidae	bacteria feeders	2	3	b2	G2614mnu.htm
Nothactinolaimus	Actinolaimidae	omnivores	4	5	p4	G7612mnu.htm
Nothanguina	Anguinidae	plant feeders	2	1	h2
Nothocriconema	Criconematidae	plant feeders	3	1	h3	G151mnu.htm
Nothocriconemoides	Criconematidae	plant feeders	3	1	h3	G091mnu.htm
Nothotylenchus	Anguinidae	fungus feeders	2	2	f2	G110mnu.htm
Notochaetosoma	Draconematidae	marine nematodes
Nudora	Monoposthiidae
Nullonchus	Iotonchidae
Nycteridostrongylus	Molineidae	animal parasites				G3571mnu.htm
Nygellus	Nygellidae	predators	5	5	p5	G675mnu.htm
Nygolaimellus	Nygolaimidae	predators	5	5	p5	G676mnu.htm
Nygolaimium	Aporcelaimidae	omnivores	5	8	o5	G767mnu.htm
Nygolaimoides	Nygolaimidae	predators	5	5	p5	G672mnu.htm
Nygolaimus	Nygolaimidae	predators	5	5	p5	G673mnu.htm
Obainia	Rhigonematidae	animal parasites
Obeliscoides	Cooperiidae	animal parasites
Oceanicucullanus	Cucullanidae	animal parasites				G971mnu.htm
Octomyomermis	Mermithidae	animal parasites
Octonchus	Oncholaimidae	marine nematodes
Odilia	Heligmonellidae	animal parasites				G3633mnu.htm
Odontanticoma	Anticomidae	marine nematodes
Odontobius	Monhysteridae
Odontolaimus	Odontolaimidae	bacteria feeders	3	3	b3	G551mnu.htm
Odontopharynx	Odontopharyngidae	predators	1	5	p1	G361mnu.htm
Odontophora	Axonolaimidae	marine nematodes				G4501mnu.htm
Odontophoroides	Axonolaimidae	marine nematodes
Oesophagodontus	Strongylidae	animal parasites
Oesophagostomoides	Chabertiidae	animal parasites
Oesophagostomum	Chabertiidae	animal parasites
Ogma	Criconematidae	plant feeders	3	1	h3	G093mnu.htm
Ohbayashinema	Heligmosomidae	animal parasites
Oigolaimella	Neodiplogastridae	eucaryote feeders	1	6	e1	G337mnu.htm
Oionchus	Mononchulidae	predators	4	5	p4	G658mnu.htm
Okapistrongylus	Chabertiidae	animal parasites
Okranema	Thoracostomopsidae	marine predators
Oligonchulus	Mylonchulidae	predators	4	5	p4
Ollulanus	Molineidae	animal parasites
Omicronema	Xyalidae	marine nematodes
Onchiolistia	Camacolaimidae	marine nematodes
Onchium	Camacolaimidae	marine nematodes
Onchocerca	Onchocercidae	animal parasites				G988mnu.htm
Oncholaimelloides	Oncholaimidae	marine nematodes
Oncholaimellus	Oncholaimidae	marine nematodes				G1526mnu.htm
Oncholaimium	Oncholaimidae	marine nematodes
Oncholaimoides	Oncholaimidae	marine nematodes
Oncholaimus	Oncholaimidae	marine nematodes				G1524mnu.htm
Onchulus	Onchulidae	predators	3	5	p3	G612mnu.htm
Onychonema	Ungellidae	animal parasites
Onyx	Desmodoridae	marine nematodes
Oonaguntus	Crateronematdae	omnivores	4	8	o4	G6921mnu.htm
Oostenbrinkella	Tylencholaimellidae	fungus feeders	4	2	f4	G792mnu.htm
Oostenbrinkia	Aulolaimoididae	omnivores	4	8	o4	G923mnu.htm
Ostertagia	Trichostrongylidae	animal parasites
Opailaimus	Belondiridae	plant feeders	5	1	h5	G7581mnu.htm
Operculorhabditis	Rhabditidae	bacteria feeders	1	3	b1	G2231mnu.htm
Ophidascaris	Ascarididae	animal parasites				G9381mnu.htm
Opisthodorylaimus	Thornenematidae	omnivores	5	8	o5	G706mnu.htm
Opisthotyleptus	Leptonchidae	fungus feeders	4	2	f4
Orientatractis	Atractidae	animal parasites				G865mnu.htm
Orientostrongylus	Heligmonellidae	animal parasites				G3631mnu.htm
Oriverutoides	Nordiidae	omnivores	4	8	o4	G7137mnu.htm
Oriverutus	Nordiidae	omnivores	4	8	o4	G7132mnu.htm
Orloffia	Haemonchidae	animal parasites				G9643mnu.htm
Orneoascaris	Ascarididae	animal parasite
Ornithofilaria	Onchocercidae	animal parasites
Ornithonema	Ornithostrongylidae	animal parasites
Ornithostrongylus	Ornithostrongylidae	animal parasites
Ophidascaris	Ascarididae	animal parasite				G9381mnu.htm
Orphreyus	Criconematidae	plant feeders	3	1	h3	G0922mnu.htm
Orrina	Anguinidae	plant feeders	2	1	h2	G042mnu.htm
Orthophallonema	Leptosomatidae	marine nematodes				G5895mnu.htm
Orthostrongylus	Protosrongylidae	animal parasites				G932mnu.htm
Ortleppascaris	Heterocheilidae	animal parasites
Ortleppstrongylus	Molineidae	animal parasites
Oryctophila	Thelastomatidae	animal parasites
Oscheius	Rhabditidae	bacteria feeders	1	3	b1	G227mnu.htm
Oslerus	Filaroididae	animal parasites				G9593mnu.htm
Osstella	Osstellidae	bacteria feeders	2	3	b2	G273mnu.htm
Ostertagia	Haemonchidae	animal parasites				G9644mnu.htm
Oswaldocruzia	Molineidae	animal parasites
Oswaldofilaria	Oswaldofilariidae	animal parasites				G9451mnu.htm
Oswaldonema	Viannaiidae	animal parasites
Oswaldostrongylus	Ornithostrongylidae	animal parasites
Otostrongylus	Crenosomatidae	animal parasites
Ottolenchus	Tylenchidae	plant feeders	2	1	h2	G0511mnu.htm
Ovomermis	Mermithidae	animal parasites
Oxybelondira	Swangeriidae	predators	5	5	p5	G7531mnu.htm
Oxydiroides	Tylencholaimidae	fungus feeders	4	2	f4	G7952mnu.htm
Oxydirus	Swangeriidae	predators	5	5	p5	G753mnu.htm
Oxyonchus	Thoracostomopsidae	marine predators
Oxyspirura	Thelaziidae	animal parasites
Oxystomatium	Oxyuridae	animal parasites
Oxystomina	Oxystominidae	marine/freshwater nematodes				G593mnu.htm