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Plesiosaurs retained their ancestral two pairs of limbs, which had evolved into large flippers. [63] Plesiosaurs were related to the earlier Nothosauridae, [64] that had a more crocodile-like body. The flipper arrangement is unusual for aquatic animals in that probably all four limbs were used to propel the animal through the water by up-and ...
Illustration of the skeletal anatomy of a Plesiosaurus dolichodeirus from Conybeare's 1824 paper that described an almost complete plesiosaur skeleton found by Mary Anning in 1823. Plesiosaurus was a moderately sized plesiosaur that grew to 2.87–3.5 m (9.4–11.5 ft) in length.
The discovery of a well-preserved fossil is helping researchers learn more about an iconic Jurassic-period species. The plesiosaur, considered a successful marine predatory ancient species, may ...
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Plesiosauroidea (/ ˈ p l iː s i ə s ɔːr /; Greek: πλησιος plēsios 'near, close to' and σαυρος sauros 'lizard') is an extinct clade of carnivorous marine reptiles.They have the snake-like longest neck to body ratio of any reptile.
José P. O’Gorman, Leonardo Salgado, Eduardo B. Olivero and Sergio A. Marenssi (2015). "Vegasaurus molyi, gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower Maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae". Journal of Vertebrate Paleontology.
Plesiosaurs were ocean-going reptiles that were contemporaries of the dinosaurs, living from the Late Triassic to the end of the Cretaceous Period. Geology: Prehistoric plesiosaurs were penguins ...
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 ...