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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 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 ...
Elasmosaurus was one of few plesiosaurs known from the New World at the time, and the first recognized member of the long-necked family of plesiosaurs, the Elasmosauridae. [ 2 ] In 1869 Cope scientifically described and figured Elasmosaurus , and the preprint version of the manuscript contained a reconstruction of the skeleton which he had ...
Bones of Leptocleidus superstes: Yuzhoupliosaurus chengjiangensis. Bathonian [11] Bathonian [11] Bathonian [11] Brancasaurus brancai. Berriasian [5] Berriasian [5] Berriasian [5] Skeleton of Brancasaurus brancai: Muraenosaurus leedsi. Callovian [5] Callovian [5] Callovian [5] Life restoration of Muraenosaurus leedsi: Cryptoclidus richardsoni ...
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The paired parietal is the hindmost bone of the skull roof. A dermal bone, it is located behind the frontals, and roofs the braincase. [25]: 38 [1]: 141 [20] parietal fenestrae The parietal fenestrae are a pair of window-like openings commonly found in the neck frills of ceratopsians.
Pliosaurus brachydeirus is the (combinatio nova of the) type species of the genus. It was first described and named by the English paleontologist Richard Owen in 1841, as a species of the wastebasket taxon Plesiosaurus in its own subgenus Pleiosaurus, creating Plesiosaurus (Pleiosaurus) brachydeirus. [5]
Life restoration. Like all plesiosaurs, Polycotylus was a large marine reptile with a short tail, large flippers, and a broad body. It has a short neck and a long head, and was a medium-sized plesiosaur, with the type species (P. latipinnis) measuring 4.7–5.4 metres (15–18 ft) long.