411 REFERENCE · Wiktionary
Sauropterygia
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Translingual
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Etymology
From mul grc -, literally "lizard flippers".
Proper noun
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superorder class Reptilia extinct taxon of aquatic reptiles that developed from terrestrial ancestors soon after the end-Permian extinction and flourished during the Mesozoic before they became extinct at the end of that era. They are united by a radical adaptation of their pectoral girdle, designed to support powerful flipper strokes