New latest Cretaceous microvertebrate fossilassemblages from the Haţeg Basin (Romania)

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• 作者：Grigorescu ; Dan ; Venczel ; Má ; rton ; Csiki ; Zoltá ; n ; Limberea ; Romeo
• 关键词：Haeg Basin ; Maastrichtian ; microvertebrates ; palaeobiogeographic affinities
• 刊名：Geologie en Mijnbouw
• 出版年：1999
• 出版时间：1999
• 年：1999
• 卷：78
• 期：3/4
• 页码：301-314
• 全文大小：248 KB

文摘

Late Cretaceous terrestrial ecosystems in southernEurope are relatively poorly known, although muchprogress has been made during the past decade,principally with regard to the microvertebratecomponents of these ecosystems.The Maastrichtian terrestrial deposits of the HaţegBasin, at the easternmost end of the South Europeanarchipelago and well known for reptilian fossils(e.g., turtles, crocodilians, pterosaurs anddinosaurs), have been thoroughly screened during thepast five years. Important microvertebrateassemblages, both quantitatively and qualitativelyspeaking, were found at Pui (SînpetruFormation), Tuştea and, particularly, Vălioara(Densuş-Ciula Formation). Several new taxa are notedhere for the first time for the Haţeg Basin,including gars, discoglossids, albanerpetontids,scincomorphan and anguimorphan lizards;dromaeosaurids and multituberculates are confirmed.Most of the microvertebrate remains are poorlypreserved and precise systematic assignment hasproved difficult.The Haţeg fauna appears to be primitive and endemic,with a Neopangean core composition, and suggests acomposite palaeobiogeographic origin for the LateCretaceous European ecosystems, confirmingconclusions reached in studies of the largervertebrates.