THE WEYMOUTH BAY PLIOSAUR: Pliosaurus kevani
Benson et al., 2013
Animalia > Chordata > Sauropsida > Sauropterygia >
Plesiosauria > Pliosauridae > ...
Well-preserved giant pliosaurid skull from the Late Jurassic
Kimmeridge Clay Formation of Dorset, United Kingdom
Length: 10 m
Pliosaurus kevani was named in honour of Kevan Sheehan, the Osmington Mills café owner who collected most of the skull, piece by piece, over a period of eight years during daily walks along the foreshore. Kevan collected chunks up to 60 kg in mass as they weathered out from the Jurassic aged Kimmeridge Clay Formation sea-cliff. (via Plesiosaur Bites)
Described in: Benson RBJ, Evans M, Smith AS, Sassoon J, Moore-Faye S, et al. (2013): A Giant Pliosaurid Skull from the Late Jurassic of England. PLoS ONE 8(5): e65989. doi:10.1371/journal.pone.0065989
Pliosaurids were Mesozoic ocean predators, some of which achieved giant sizes greater than 12 metres long.
They had a global distribution and spanned approx. 110 million years, from the Early Jurassic until the early Late Cretaceous. However, their fossils are best known from the Late Jurassic Oxford and Kimmeridge Clay formations of England.
Pliosaurids form part of a larger clade of marine reptiles, Plesiosauria, characterized by highly plastic body proportions, and including extremely long-necked taxa such as Elasmosaurus, as well as short-necked, large-skulled taxa informally termed ‘pliosauromorphs’.
[1] Illustrator's visualization: Pliosaurus kevani | Spinops [Norbu Tamara]
[2] Illustrated phylogenetic diagram. Whale is present only for size comparison. New Scientist / "Real Sea Monsters" - read the article ...
[3] Maximum skull length of Jurassic–Cretaceous pliosaurids. PLoS ONE 8(5): e65989
[4] Plesiosaur Bites: "The Weymouth Bay Pliosaur"
See also "A Giant Pliosaurid Skull from the Late Jurassic of England" (at Species New to Science)