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Pterodaustro
''Pterodaustro'' is a genus of Cretaceous pterodactyloid pterosaur from South America, which lived 105 million years ago.
==Discovery and naming==
The first fossils, among them the holotype PLV 2571, a thigh bone, were in the late sixties discovered by Bonaparte in the Lagarcito Formation, situated in the San Luis Province of Patagonia, Argentina, and dating from the Albian. The genus has later also been found in Chile in the Santa Ana Formation. At the Argentine site, the just 50 m² large "Loma del ''Pterodaustro''", since then during several expeditions over 750 ''Pterodaustro'' specimens have been collected, 288 of them having been catalogued until 2008. This makes the species one of the best known pterosaurs, with examples from all growth stages, from egg to adult.
The genus was named in 1969 by José Bonaparte as an as yet undescribed ''nomen nudum''. The first description followed in 1970, making the name valid, the type species being ''Pterodaustro guiñazui''. The genus name is derived from Greek ''pteron'', "wing" and Latin ''auster'', "south (wind)". The elements are combined as a condensed ''pteron de austro'', "wing from the south". The specific name honours paleontologist Román Guiñazú. It was emended in 1978 by Peter Wellnhofer into ''guinazui'', because diacritical signs such as the tilde are not allowed in species names.
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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