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About: Sauropterygia     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatFossils, within Data Space : dbpedia.org associated with source document(s)

Type: Thinganimalyago:Adult109605289yago:CausalAgent100007347yago:Dodo110022908yago:LivingThing100004258yago:Object100002684yago:Oldster110376523yago:Organism100004475yago:Person100007846yago:PhysicalEntity100001930yago:YagoLegalActoryago:YagoLegalActorGeoyago:Whole100003553yago:WikicatFossils New Facet based on Instances of this Class

Sauropterygia ("lizard flippers") is an extinct taxon of diverse, aquatic reptiles that developed from terrestrial ancestors soon after the end-Permian extinction and flourished during the Triassic before all except for the Plesiosauria became extinct at the end of that period. The plesiosaurs would continue to diversify until the end of the Mesozoic. Sauropterygians are united by a radical adaptation of their pectoral girdle, adapted to support powerful flipper strokes. Some later sauropterygians, such as the pliosaurs, developed a similar mechanism in their pelvis. Uniquely among reptiles, sauropterygians moved their tail vertically like modern cetaceans and sirenians.