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Life restoration of Muraenosaurus. Cryptoclididae is a family of medium-sized plesiosaurs that existed from the Middle Jurassic to the Early Cretaceous. They had long necks, broad and short skulls and densely packed teeth. They fed on small soft-bodied preys such as small fish and crustaceans.
The fact that the osteology of the plesiosaur's neck makes it absolutely safe to say that the plesiosaur could not lift its head like a swan out of water as the Loch Ness monster does, the assumption that air-breathing animals would be easy to see whenever they appear at the surface to breathe, [146] the fact that the loch is too small and ...
It appears to be the most common species of plesiosaur in the Lias Group of England. [24] Plesiosaurus is best represented from the "upper part of the Blue Lias , the 'Shales with Beef,' and the lower Black Ven Marls" the latter of which form part of the Charmouth Mudstone ; using the Lias Group ammonite fossil zones, these rocks date to the ...
Plesioelasmosaurus is an extinct genus of elasmosaurid plesiosaur from the Late Cretaceous (middle Cenomanian) Greenhorn Limestone of Kansas, United States. The genus contains a single species, P. walkeri , known from a partial skeleton.
This list of plesiosaurs is a comprehensive listing of all genera that have ever been included in the order Plesiosauria, excluding purely vernacular terms.The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomen dubium), or were not formally published (nomen nudum), as well as junior synonyms of more established names, and genera that ...
Pravoslavlev recognized another species from New Zealand, E. hoodii, named by Owen in 1870 as Plesiosaurus hoodii based on a neck vertebra. [62] Welles recognized it as a nomen dubium in 1962; [33] Joan Wiffen and William Moisley concurred in a 1986 review of New Zealand plesiosaurs. [63] In 1949 Welles named a new species of Elasmosaurus, E ...
Plesiosaurs fossils which were discovered at Street (e.g. Avalonnectes and Thalassiodracon), or at penecontemporaneous strata such as the Watchet locality, represent the earliest known occurrence of the Plesiosauria. Hence, Eoplesiosaurus is the oldest plesiosauroid and one of the oldest plesiosaurs, to date. [1]
Kaiwhekea has been placed as an aristonectine plesiosaur close to Aristonectes (O'Keefe and Street, 2009). In 2010, Kaiwhekea was transferred to Leptocleididae , [ 3 ] but more recent analyses do not find the same result.