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Plesiopterys Wildi
''Plesiopterys'' (“plesio” meaning “near,” and “pterys” meaning “wing” or “pterygoid bone”) is an extinct genus of plesiosaur originating from the Posidonia Shale, Posidonienschiefer of Holzmaden, Germany, and lived during the Early Jurassic period. The type species, type and monotypic taxon, only species is ''P. wildi'', known from two immature specimens with the subadult measuring long. It possesses a unique combination of both primitive and derived characters, and is currently displayed at the State Museum of Natural History Stuttgart, State Museum of Natural History and the Hauff Museum, Germany. Discovery and naming In 2004, Frank Robin O'Keefe named the species ''Plesiopterys wildi''. The generic name is a combination of Greek ''plesios'', "near", and ''pterys'', "wing", the latter also referring to the pterygoid bones (apart from the fins). The specific name honors the German paleontologist Rupert Wild for his contributions to the Mesozoic vertebrate p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Jurassic
The Early Jurassic Epoch (geology), Epoch (in chronostratigraphy corresponding to the Lower Jurassic series (stratigraphy), Series) is the earliest of three epochs of the Jurassic Period. The Early Jurassic starts immediately after the Triassic–Jurassic extinction event, 201.3 Ma (million years ago), and ends at the start of the Middle Jurassic 174.7 ±0.8 Ma. Certain rocks of marine origin of this age in Europe are called "Lias Group, Lias" and that name was used for the period, as well, in 19th-century geology. In southern Germany rocks of this age are called Black Jurassic. Origin of the name Lias There are two possible origins for the name Lias: the first reason is it was taken by a geologist from an England, English quarryman's dialect pronunciation of the word "layers"; secondly, sloops from north Cornwall, Cornish ports such as Bude would sail across the Bristol Channel to the Vale of Glamorgan to load up with rock from coastal limestone quarries (lias and Carbonif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
