کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8907636 1635125 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A Late Jurassic-?earliest Cretaceous ctenochasmatid (Pterosauria, Pterodactyloidea): The first report of pterosaurs from Uruguay
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
A Late Jurassic-?earliest Cretaceous ctenochasmatid (Pterosauria, Pterodactyloidea): The first report of pterosaurs from Uruguay
چکیده انگلیسی
The Tacuarembó Formation contains a faunal assemblage with some taxa clearly indicative of a Late Jurassic-Early Cretaceous age. In this context, the first remains of Uruguayan pterosaurs are described. These correspond to a dorsoventrally compressed and narrow fragment of a rostrum widening anteriorly, with alveoli and a very fragmentary dentition including a tooth base. The orientation of the alveoli and preserved tooth base allows the assumption that the teeth were projected laterally and forward from the dental borders. The deep interdental concavities make up a wavy contour of the lateral margins of the rostrum. Both morphology and size correspond to that observed in the ctenochasmatid gnathosaurines. The Uruguayan pterosaur remains represent the oldest ctenochasmatid found in South America and suggest an age of the fossiliferous horizon no older than Late Jurassic, which was already established on the basis of other fossils, such as Priohybodus arambourgui d'Erasmo, 1960.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of South American Earth Sciences - Volume 85, August 2018, Pages 298-306
نویسندگان
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