Temporal range: Early Jurassic, 183–180Ma
|The holotype in the State Museum of Natural History Stuttgart|
Smith & Vincent, 2010
|Species:||† M. victor|
(Fraas, 1910 [originally Plesiosaurus])
Meyerasaurus is known from the holotype SMNS 12478, articulated and complete skeleton which preserved the skull, exposed in ventral view. The skull has a length of 37 cm (15 in), and the animal is about 3.35 m (11.0 ft) in length. It was collected from the Harpoceras elegantulum-falciferum ammonoid subzones, Harpoceras falcifer zone, of the famous Posidonien-Schiefer lagerstätte (Posidonia Shale), dating to the early Toarcian stage of the Early Jurassic, about 183-180 million years ago.
Meyerasaurus was first named by Adam S. Smith and Peggy Vincent in 2010 and the type species is Meyerasaurus victor. It was originally classified as a species of Plesiosaurus, later as the second named species of Thaumatosaurus (defunct name, meaning "wonder reptile") and ultimately as a species of Eurycleidus or Rhomaleosaurus. The generic name honors the German palaeontologist Hermann von Meyer for proposing the generic name Thaumatosaurus.
- Adam S. Smith and Peggy Vincent (2010). "A new genus of pliosaur (Reptilia: Sauropterygia) from the Lower Jurassic of Holzmaden, Germany". Palaeontology 53 (5): 1049–1063. doi:10.1111/j.1475-4983.2010.00975.x.
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