Search results
Results from the WOW.Com Content Network
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 ...
Plesiosaurus (Greek: πλησίος (plesios), near to + σαῦρος (sauros), lizard) is a genus of extinct, large marine sauropterygian reptile that lived during the Early Jurassic. It is known by nearly complete skeletons from the Lias of England.
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 ...
A 2015 study concluded that locomotion was mostly done by the fore-flippers while the hind-flippers functioned in maneuverability and stability; [86] a 2017 study concluded that the hind-flippers of plesiosaurs produced 60% more thrust and had 40% more efficiency when moving in harmony with the fore-flippers. [87] The paddles of plesiosaurs ...
Liggett and others reported the discovery of a giant plesiosaur flipper from the Greenhorn Limestone of Kansas. Although a significant portion of the specimen was missing, it implied a life length of more than 2 m. The researchers tentatively attributed the flipper to Brachauchenius lucasi. The specimen is now catalogued as FHSM VP-13997. [78]
[44] [26] The front flippers of Peloneustes have aspect ratios of 6.36, while the rear flippers have aspect ratios of 8.32. These ratios are similar to those of the wings of modern falcons . In 2001, O'Keefe proposed that, much like falcons, pliosauromorph plesiosaurs such as Peloneustes probably were capable of moving quickly and nimbly ...
The post Feathers, Flippers and Fledglings: A Free 5-Day Lesson Plan on Emperor Penguins appeared first on A-Z Animals. Show comments. Advertisement. Advertisement. In Other News. Entertainment.
A 2015 study concluded that locomotion was mostly done by the fore-flippers while the hind-flippers functioned in maneuverability and stability; [48] a 2017 study concluded that the hind-flippers of plesiosaurs produced 60% more thrust and had 40% more efficiency when moving in harmony with the fore-flippers. [49] The paddles of plesiosaurs ...