Sauropterygians

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Nothosauria (nothosaurs; subclass Archosauria, order Sauropterygia) A suborder of marine reptiles that flourished during the Triassic. They possessed long necks and their limbs were adapted to swimming. Nothosaurus is one of several genera and one of the species referred to it was the last of the line. The nothosaurs were replaced by the plesiosaurs (Plesiosauroidea) in the Early Jurassic.

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Nothosauria (nothosaurs; order Sauropterygia) Suborder of marine reptiles that flourished during the Triassic. They possessed long necks, and their limbs were adapted to swimming. The nothosaurs were replaced by the plesiosaurs in the Early Jurassic.

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Sauropterygia (class Reptilia, subclass Euryapsida) An extinct reptilian order, that comprises the suborders Plesiosauria (plesiosaurs) and Nothosauria (nothosaurs).

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Sauropterygia (subclass Archosauria) An extinct reptilian order, that comprises the two suborders Plesiosauria (plesiosaurs) and Nothosauria (nothosaurs).

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nothosaurs See NOTHOSAURIA.