词条 | Mandschurosaurus |
释义 |
| name = Mandschurosaurus | taxon = Mandschurosaurus | fossil_range = Late Cretaceous, {{fossil range|66}} | authority = Riabinin, 1930 | type_species = {{extinct}}Mandschurosaurus amurensis | type_species_authority = Riabinin, 1925 | subdivision_ranks = Species | subdivision =
}} Mandschurosaurus is a genus of hadrosaurs based on material from the Upper Cretaceous of Belye Kruchi, Manchuria. History of discoveryM. amurensis is based on a poorly preserved and incomplete skeleton collected by Russian scientists in 1914 from the banks of the Amur River. It was the first dinosaur genus named from China, and a mounted skeleton is on display at the Central Geological and Prospecting Museum in St. Petersburg. However, much of the skeleton is plaster. Regardless, the remains represent a large hadrosaurid. There has been some debate regarding the validity of this genus. Brett-Surman (1979) first considered it a nomen dubium, though some later workers have continued to see it as a valid taxon (Chapman et Brett Surman, 1990, for example). Most recently, Horner et al. (2004) listed the type species as a nomen dubium. The holotype material was initially referred to the genus "Trachodon" (also a nomen dubium), but later reassigned to a new genus by Riabinin (1930). Over the years, three species have been placed within this genus: Mandschurosaurus amurensis, M. mongoliensis, and M. laosensis. Brett-Surman (1979) considered M. mongoliensis a distinct genus, which he named Gilmoreosaurus. Horner et al. (2004) considered M. laosensis a nomen dubium. This leaves only Riabinin's original species, M. amurensis, as a possibly valid taxon. See also{{Portal|Dinosaurs}}
References
3 : Late Cretaceous dinosaurs of Asia|Hadrosaurs|Fossil taxa described in 1930 |
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