osteichthyan
A bony fish of the class Osteichthyes.

osteichthyans
plural of osteichthyan

osteoglossid
Any fish in the family Osteoglossidae, the arowanas.

osteoglossids
plural of osteoglossid

osteolepid
Any osteolepidid fish in the family Osteolepidae

osteolepidid
Any extinct sarcopterygian in the superorder Osteolepidida

osteolepidids
plural of osteolepidid

osteolepids
plural of osteolepid

osteolepiform
Any extinct fish of the order Osteolepiformes

osteolepiforms
plural of osteolepiform

osteopeltid
Any gastropod in the family Osteopeltidae.

osteopeltids
plural of osteopeltid

osteostracan
Any extinct fish of the class Osteostraci

osteostracans
plural of osteostracan

ostracean
Any bivalve of the family Ostreidae; an oyster.

ostraceans
plural of ostracean

ostraciid
Any fish in the family the Ostraciidae.

ostraciids
plural of ostraciid

ostracite
A fossil oyster.

otinid
Any gastropod in the family Otinidae.

otinids
plural of otinid

otopheidomenid
Any mite in the family Otopheidomenidae.

otopheidomenids
plural of otopheidomenid

ovicaprid
A domestic sheep or goat. Also called a caprovine.

ovicaprids
plural of ovicaprid

ovicaprine
Synonym of ovicaprid.

ovicaprines
plural of ovicaprine

ovulid
Any gastropod in the family Ovulidae.

ovulids
plural of ovulid

owenettid
Any extinct parareptile in the family Owenettidae.

owenettids
plural of owenettid

oweniid
Any polychaete worm of the family Oweniidae.

oweniids
plural of oweniid

oxpecker
Either of two species of passerine bird in the genus Buphagus, endemic to the sub-Saharan African savanna.

oxyaenid
Any mammal in the family Oxyaenidae.

oxyaenids
plural of oxyaenid

oxychorid
Any weevil in the family Oxychoridae, a synonym of the belid tribe Oxycorynini.

oxychorids
plural of oxychorid

oxycorynid
Any weevil in the family Oxycorynidae, now considered to be the belid subfamily Oxycoryninae.

oxycorynids
plural of oxycorynid

oxydimorphine
Synonym of pseudomorphine.

oxynoid
Any gastropod in the family Oxynoidae

oxynoids
plural of oxynoid

oxynotid
Any shark in the family Oxynotidae.

oxynotids
plural of oxynotid

oxyopid
Any spider in the family Oxyopidae (lynx spiders).

oxyopids
plural of oxyopid

oxyurid
Any of the order Oxyurida of nematode worms.

oxyurids
plural of oxyurid

oysterling
A young oyster.

ozaenine
Any ground beetle of the tribe Ozaenini

ozaenines
plural of ozaenine

pachybrachine
Any beetle of the chrysomelid tribe Pachybrachini (subtribe Pachybrachina in some classifications).

pachychilid
Any freshwater snail in the family Pachychilidae.

pachychilids
plural of pachychilid

pachycormid
Any extinct fish in the family Pachycormidae.

pachycormids
plural of pachycormid

pachycormiform
Any extinct fish of the order Pachycormiformes

pachycormiforms
plural of pachycormiform

pachylaelapid
Any mite in the family Pachylaelapidae.

pachylaelapids
plural of pachylaelapid

pachyophiid
Any reptile in the family Pachyophiidae, now referred to as the Simoliophiidae.

pachyophiids
plural of pachyophiid

pachypleurosaurid
Any extinct sauropterygian reptile of the family Pachypleurosauridae.

pachypleurosaurids
plural of pachypleurosaurid

pachyporid
Any coral of the family Pachyporidae

pachyporids
plural of pachyporid

pachyrhizodontid
Any extinct fish of the family Pachyrhizodontidae

pachyrhizodontids
plural of pachyrhizodontid

pachyrhizodontoid
Any extinct teleost of the suborder †Pachyrhizodontoidei

pachyrhizodontoids
plural of pachyrhizodontoid

pachyrhynchid
Any weevil of the genus Pachyrhynchus

pachyrhynchids
plural of pachyrhynchid

pachyrukhine
Any extinct animal of the subfamily Pachyrukhinae

pachyrukhines
plural of pachyrukhine

pachytroctid
Any barklouse of the family Pachytroctidae.

pachytroctids
plural of pachytroctid

pacovicuna
A hybrid between an alpaca and vicuna.

pacovicunas
plural of pacovicuna

paederine
Any rove beetle of the subfamily Paederinae.

paederines
plural of paederine

pagurid
Any of the hermit crabs of family Paguridae, a right-handed hermit crab.
Any hermit crab, any member of superfamily Paguroidea.

pagurids
plural of pagurid

palaelodid
Any extinct flamingolike bird in the family Palaelodidae.

palaelodids
plural of palaelodid

palaeoamasiid
Any extinct embrithopod mammal of the family †Palaeoamasiidae

palaeoamasiids
plural of palaeoamasiid

palaeobatrachid
Any extinct frog of the family †Palaeobatrachidae

palaeobatrachids
plural of palaeobatrachid

palaeocastorid
Any extinct prehistoric beaver of the genus †Palaeocastor.

palaeocastorids
plural of palaeocastorid

palaeodelta
Alternative form of paleodelta.

palaeomerycid
Alternative form of paleomerycid.

palaeomerycids
plural of palaeomerycid

palaeonemertean
Any nemertean of the order Palaeonemertea

palaeonemerteans
plural of palaeonemertean

palaeoniscid
Any extinct fish of the family Palaeoniscidae

palaeoniscids
plural of palaeoniscid

palaeonisciform
Any extinct fish of the order Palaeonisciformes

palaeonisciforms
plural of palaeonisciform

palaeophiid
Any extinct sea snake in the family Palaeophiidae.

palaeophiids
plural of palaeophiid

palaeopropithecid
Any extinct lemur in the family Palaeopropithecidae.

palaeopropithecids
plural of palaeopropithecid

palaeoryctid
Any extinct shrewlike mammal in the family Palaeoryctidae.

palaeoryctids
plural of palaeoryctid

palaeoscolecid
An extinct ecdysozoan worm of the class Palaeoscolecid.

palaeoscolecids
plural of palaeoscolecid

palaeosetid
Any moth in the family Palaeosetidae.

palaeosetids
plural of palaeosetid

palaeothere
Alternative form of paleothere.

palaeotheres
plural of palaeothere

palaeotheriid
Any extinct hoofed mammal in the family Palaeotheriidae.

palaeotheriids
plural of palaeotheriid

palaeozygopleurid
Any extinct gastropod in the family Palaeozygopleuridae.

palaeozygopleurids
plural of palaeozygopleurid

paleodelta
A prehistoric river delta.

paleomerycid
Any extinct ruminant of the family Palaeomerycidae

paleomerycids
plural of paleomerycid

paleonemertean
Alternative form of palaeonemertean.

paleonemerteans
plural of paleonemertean

paleoniscid
Alternative form of palaeoniscid.

paleoniscids
plural of paleoniscid

paleonisciform
Alternative form of palaeonisciform.

paleonisciforms
plural of paleonisciform

paleoparadoxiid
Any extinct aquatic mammal of the family Paleoparadoxiidae

paleoparadoxiids
plural of paleoparadoxiid

paleothere
Any extinct mammal of the genus Palaeotherium.

paleotheres
plural of paleothere

palicid
Any crab in the family Palicidae.

palicids
plural of palicid

palinurid
Any lobster-like crustacean in the family Palinuridae

palinurids
plural of palinurid

pallopterid
Any fly of the family Pallopteridae.

pallopterids
plural of pallopterid

palorchestid
Any marsupial in the family Palorchestidae.

palorchestids
plural of palorchestid

palpimanid
Any spider in the family Palpimanidae.

palpimanids
plural of palpimanid

paludomid
Any gastropod in the family Paludomidae.

paludomids
plural of paludomid

pampathere
Any extinct armadillo of the family †Pampatheriidae

pampatheres
plural of pampathere

panagrolaimid
Any nematode of the order Panagrolaimida

panagrolaimids
plural of panagrolaimid

pandalid
Any shrimp in the family Pandalidae.

pandalids
plural of pandalid

panderichthyid
Any of several prehistoric fish of the family Panderichthyidae

panderichthyids
plural of panderichthyid

pangasiid
Any catfish in the family Pangasiidae.

pangasiids
plural of pangasiid

pangopup
A young pangolin; a scaly anteater pup.

pangopups
plural of pangopup

panine
A mammal of the genus Pan.

panines
plural of panine

panopeid
Any crab in the family Panopeidae.

panopeids
plural of panopeid

panpulmonate
Any slug or snail of the order Panpulmonata

panpulmonates
plural of panpulmonate

pantheid
Any moth in the family Pantheidae, now considered to be the noctuid subfamily Pantheinae.

pantheids
plural of pantheid

pantheress
A female panther.

pantheresses
plural of pantheress