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Definition of Order Sauropterygia
1. Noun. Extinct marine reptiles: plesiosaurs; nothosaurs.
Exact synonyms: Sauropterygia
Generic synonyms: Animal Order
Group relationships: Archosauria, Subclass Archosauria
Member holonyms: Plesiosauria, Suborder Plesiosauria, Nothosauria, Suborder Nothosauria
Generic synonyms: Animal Order
Group relationships: Archosauria, Subclass Archosauria
Member holonyms: Plesiosauria, Suborder Plesiosauria, Nothosauria, Suborder Nothosauria