单词 | deinonychosaur |
释义 | deinonychosaurn. Palaeontology. Any of various carnivorous theropod dinosaurs constituting the Cretaceous infraorder Deinonychosauria, characterized by a large recurved claw on the second toe, and many bird-like features that may have included feathers.The group comprises the families Dromaeosauridae (which includes Velociraptor, Deinonychus, and their relatives) and Troodontidae. ΘΚΠ the world > animals > reptiles > extinct reptiles and dinosaurs > [noun] > Sauria > order Saurischia > member of order Theropoda Archaeopteryx1862 theropod1891 Ornithomimus1896 deinonychosaur1969 raptor1990 1969 E. H. Colbert & D. A. Russell in Amer. Mus. Novitates No. 2380. 43 In various characters the deinonychosaurs show close ties to the coelurosaurs. 1991 E. H. Colbert & M. Morales Evol. Vertebr. (ed. 4) xii. 154/1 The deinonychosaurs were bipedal, like the other theropods, but the forelimbs and the hands were remarkably large. 2011 New Scientist 30 July 10/4 Because of the similarities with Archaeopteryx, Xu's team concluded that the ‘first bird’ is a deinonychosaur too. This is a new entry (OED Third Edition, June 2012; most recently modified version published online March 2022). < n.1969 |
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