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suborder Myxinoideisuborder Natantia
suborder Nematocera
suborder Nothosauria
suborder Odontoceti
suborder Ophidia
suborder Ornithomimida
suborder Ornithopoda
suborder Oscines
suborder Osteostraci
suborder Otides
suborder Pachycephalosaurus
suborder Passeres
suborder Percoidea
suborder Petromyzoniformes
suborder Pinnipedia
-- suborder Plesiosauria --
suborder Prosauropoda
suborder Prosimii
suborder Reptantia
suborder Ruminantia
suborder Sauria
suborder Sauropoda
suborder Sauropodomorpha
suborder Sciuromorpha
suborder Scombroidea
suborder Scorpaenoidea
suborder Serpentes
suborder Strepsirhini
suborder Tarsioidea
suborder Theropoda
suborder Thyreophora
suborder Tyranni
suborder Plesiosauria
| Noun | 1. |  suborder Plesiosauria - any of the plesiosaursSynonyms: Plesiosauria |