Sauropterygia

plural noun
Sau·​rop·​te·​ryg·​ia | \sȯˌräptəˈrijēə\

Definition of Sauropterygia 

: an order of Reptilia comprising forms more or less completely adapted to a marine environment and usually including the suborders Nothosauria and Plesiosauria

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Other Words from Sauropterygia

sauropterygian \ ⸗¦⸗⸗¦rijēən \ adjective or noun

History and Etymology for Sauropterygia

New Latin, from saur- + pteryg- + -ia

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