Sauropterygia
Appearance
Translingual
[edit]
Etymology
[edit]From Ancient Greek, literally "lizard flippers".
Proper noun
[edit]†Sauropterygia
- A taxonomic superorder within the 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.