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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 ...
Anatomy and Systematics of the Rhomaleosauridae (Sauropterygia:Plesiosauria) (PDF) (Thesis). University of Ireland. University of Ireland. This article provides insufficient context for those unfamiliar with the subject .
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 ...
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.
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.
The anatomy of the Peloneustes specimens was described in the second volume, based primarily on the well-preserved skulls NHMUK R2679 and NHMUK R3808 and NHMUK R3318, an almost complete skeleton. NHMUK R3318 was so well preserved that it could be rearticulated and mounted, although the missing parts of the pelvis and limbs had to be filled in.
In 2003, Gasparini interpreted the M. seymourensis holotype as a juvenile because of its smaller size and the lack of fusion of the neural arches to the vertebrae. [3] The downward-curving teeth of the lower jaw indicate that unlike most plesiosaurs, Morturneria was capable of filter-feeding, scooping sand from sediments, ejecting sediment-laden water, and preying on amphipods and other tiny ...