Amphisbaenians from the European Eocene: a biogeographical review
Amphisbaenians from the European Eocene: a biogeographical review
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DOI：
10.1007/s12549-012-0104-6
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发表时间：
2012-12-01
期刊：
影响因子：
--
通讯作者：
Auge, Marc Louis
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文献类型：
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作者：
Auge, Marc Louis
本文对欧洲始新世的部分安菲斯贝阶化石记录进行了订正。没有证据表明晚白垩世在欧洲或其他大陆上存在两栖类蜥蜴。古新世早期和整个古近纪，除了始新世中期的显著例外，冠冠安菲斯巴人都出现在欧洲。特别是，他们没有在梅塞尔发现。本文简要地回顾了以前归属于安菲斯巴人的欧洲化石分类群，并对始新世化石记录中的一些代表性标本进行了描述：来自穆蒂尼的齿骨和椎骨（早始新世，法国）被称为北美属Anniealexandria;始新世晚期的Phosphorites du Quercy（法国）化石属于Blanidae，它们是化石记录中最早可靠出现的Blanidae;来自Grisolles（始新世中晚期，法国巴黎盆地）的牙齿和上颌骨被称为一个新种Louisamphisbaena ferox。全球分布的化石amphisbaenians在始新世揭示了至少一个插曲之间的分散在北美和欧洲在始新世早期。最后，一些解释的情况下，冠amphisbaenians在梅塞尔和欧洲中始新世的建议。
In this paper, part of the amphisbaenian fossil record from the european Eocene is revised. There is no evidence for the existence of amphisbaenian lizards in Europe or on other continents during the Late Cretaceous. Crown amphisbaenians were present in Europe in the early Paleocene and throughout the Paleogene, with the notable exception of the middle Eocene. In particular, they were not found at Messel. European fossil taxa previously assigned to the amphisbaenians are briefly reviewed, and a description of some representative specimens from the Eocene fossil record is presented: dentary and vertebrae from Mutigny (early Eocene, France) are referred to the North American genus Anniealexandria; fossils from the late Eocene of the Phosphorites du Quercy (France) are attributed to Blanidae, and they are the earliest secure occurrence of Blanidae in the fossil record; and dentaries and maxillae from Grisolles (middle-late Eocene, Paris Basin, France) are referred to a new species, Louisamphisbaena ferox. Global distribution of fossil amphisbaenians in the Eocene reveals at least one episode of dispersal between North America and Europe during the early Eocene. Finally, some explanations are suggested for the absence of crown amphisbaenians at Messel and in the European middle Eocene.