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''Deltadromeus'' (meaning "delta runner") is a genus of large basal ceratosaurian theropod dinosaur from Northern Africa. It had long, unusually slender hind limbs for its size, suggesting that it was a swift runner. The skull is not known. One fossil specimen of a single species (''D. agilis'', or "agile delta runner") has been described, found in the Kem Kem Beds, which date to the mid Cretaceous Period (mid Cenomanian age), about 95 million years ago. It may be a junior synonym of the contemporary ''Bahariasaurus''.〔Holtz, Thomas R. Jr. (2008) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages'' (Supplementary Information )〕 ==Description== The fairly complete holotype skeleton of ''Deltadromeus agilis'' (museum catalogue number SGM-Din2) measured an estimated 8 m (26.24 ft) long.〔Seebacher, F. (2001). "A new method to calculate allometric length-mass relationships of dinosaurs." ''Journal of Vertebrate Paleontology'', 21(1): 51–60.〕 A number of specimens (catalogued under IPHG 1912 VIII) were originally considered by Ernst Stromer to be conspecific with ''Bahariasaurus'',〔Stromer (1934). "Ergebnisse der Forschungsreisen Prof. E. Stromers in den Wüsten Ägyptens." II. Wirbeltierreste der Baharije-Stufe (unterstes Cenoman). 13. Dinosauria. Abh. Bayer. Akad. Wiss., Math.-Nat. Abt., (n. s.) 22 1-79, 3 pls.〕 but were referred to ''Deltadromeus'' by Paul Sereno in 1996.〔Sereno, Dutheil, Iarochene, Larsson, Lyon, Magwene, Sidor, Varricchio and Wilson (1996). "Predatory Dinosaurs from the Sahara and Late Cretaceous Faunal Differentiation." ''Science'', 272(5264): 986-991.〕 They were thought to come from a much larger individual, with a femur (upper leg bone) length of 1.22 meters, compared to 0.74 meter femur of the holotype.〔 However, the referral of the coracoid, pubes, and hindlimb material catalogued under IPHG 1912 VIII to ''Deltadromeus'' has been questioned because the remains came from different horizons and localities in the Bahariya Formation, and actually exhibit notable differences from the holotype of ''Deltadromeus''. ''Deltadromeus'' skeletons have been found in the same formations as those of the giant theropods ''Carcharodontosaurus'', ''Spinosaurus'', and ''Bahariasaurus'', which may be synonymous with ''Deltadromeus''. No skull material has been found for either ''Deltadromeus'' or ''Bahariasaurus'', and though carnivore teeth labelled as "Deltadromeus" are commonly sold in rock shops, there is no way of knowing if they actually come from this animal.〔 ''Deltadromeus'' is thought to have weighted up to 2 metric tons.〔https://sites.google.com/site/paleofilescom/deltadromeus〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Deltadromeus」の詳細全文を読む スポンサード リンク
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