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Neuquensaurus
''Neuquensaurus'' (meaning "Neuquén lizard") is a genus of saltasaurid sauropod dinosaur that appeared in the Late Cretaceous, 71 million years ago in Argentina and Uruguay in South America. Its fossils were recovered from outcrops of the Anacleto Formation around Cinco Saltos, near the Neuquén river from which its name is derived.
==History==
In 1893, Richard Lydekker named "Titanosaurus" ''australis'', based on a series of caudal vertebrae and limb elements. The remains were found in the Neuquen Province of Patagonia, and were assigned to one individual.〔 Some elements that were assigned to "Titanosaurus" ''australis'' were then reassigned to "Laplatasaurus" ''araukanicus'' by Friedrich von Huene in 1929.〔 The same year, Huene named "T." ''robustus'', and claimed it differed from "T." ''australis'' by differences in the limb material. Huene described all the slender limb material to "T." ''australis'', but did not say any differentiating features between the vertebrae. When describing "T." ''robustus'', Huene did not readily compare other genera and species to it.〔 The material assigned to "T." ''robustus'' was said by Bonaparte ''et al.'' to consist of a left femur, both ulnas, and a left radius.〔
Powell found in 1992, that "T." ''australis'' was less similar than "Laplatasaurus" ''araukaicus'' to ''Titanosaurus indicus'', and so named a new genus, ''Neuquensaurus'', for the species. He also found "T." ''robustus'' to be assignable to the new genus, but considered it non-diagnostical, and so a ''nomen dubium''. Later, the two species were assigned to ''Saltasaurus'' by John McIntosh, for McIntosh said the features found by Bonaparte were not of taxonomic importance, and therefore not diagnostic.〔
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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