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Ischyrosaurus : ウィキペディア英語版
Ischyrosaurus

"Ischyrosaurus" (meaning "strong lizard", for its large humerus; name in quotation marks because it is preoccupied) was a genus of sauropod dinosaur from the Kimmeridgian-age Upper Jurassic Kimmeridge Clay of Dorset, England. It was once synonymized with the Early Cretaceous-age ''Pelorosaurus''.
==History and Taxonomy==
"Ischyrosaurus" is based on a partial humerus (NHMUK R41626) found in 1868. John Hulke described it briefly in 1869,〔 then named it in 1874. The genus is preoccupied by a name Edward Drinker Cope coined in 1869.
Like most sauropod remains from the Upper Jurassic-Lower Cretaceous of Europe, it became part of the ''Pelorosaurus''-''Ornithopsis'' taxonomic tangle, being referred first to ''Ornithopsis'' as ''O. manseli'',〔Lydekker, R. (1888). ''Catalogue of the Fossil Reptilia and Amphibia in the British Museum (Natural History). Part I. Containing the Orders Ornithosauria, Crocodilia, Dinosauria, Squamata, Rhynchocephalia, and Proterosauria.'' British Museum (Natural History):London, 1-309.〕 then to ''Pelorosaurus'' as ''P. manseli''.〔von Huene, F. (1909). Skizze zu einer Systematik und Stammesgeschichte der Dinosaurier. ''Centralblatt für Mineralogie, Geologie und Paläontologie'' 1909:12-22. ()〕〔Romer, A.S. (1956). ''Osteology of the Reptiles''. University of Chicago Press:Chicago 1-772. ISBN 0-89464-985-X〕〔Steel, R. (1970). Part 14. Saurischia. ''Handbuch der Paläoherpetologie/Encyclopedia of Paleoherpetology''. Part 14. Gustav Fischer Verlag:Stuttgart p. 1-87.〕 Upchurch ''et al.'', in their review of sauropods (2004), listed it as a dubious sauropod.〔Upchurch, P.M., Barrett, P.M., and Dodson, P. (2004). Sauropoda. In: Weishampel, D.B., Dodson, P., and Osmólska, H. (eds.). ''The Dinosauria'' (2nd edition). University of California Press:Berkeley 259-322. ISBN 0-520-24209-2〕 A 2010 overview of Late Jurassic sauropods from Dorset noted that ''Ischyrosaurus'' shared features seen in both Rebbachisauridae and Titanosauriformes, but lacked features to nail down its exact phylogenetic position.〔Paul M. Barrett, Roger B.J. Benson and Paul Upchurch (2010). "Dinosaurs of Dorset: Part II, the sauropod dinosaurs (Saurischia, Sauropoda) with additional comments on the theropods". Proceedings of the Dorset Natural History and Archaeological Society 131: 113–126.〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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