ABSTRACT

The European Paleocene terrestrial and freshwater turtle fauna is radically different from that in the Upper Cretaceous. This Paleocene fauna is largely formed by groups of turtles not found in the Mesozoic record of the continent. However, European Paleocene sites have produced several lineages that dispersed from other continents, including basal turtles (i.e., stem Testudines) and compsemydids (i.e., Paracryptodira). Both groups are well represented at the French upper Paleocene site of Mont de Berru, Marne Department. A new taxon from this locality, Gallica lapparentiana, gen. et sp. nov., is described here and attributed to the eucryptodiran lineage ‘Macrobaenidae.’ Heretofore, no ‘macrobaenid’ has yet been identified in the Cenozoic record of Europe. ‘Macrobaenids’ have their origin in the Upper Jurassic of Asia. In fact, they represent the most diverse group of turtles currently known for the Lower Cretaceous record in that continent. They reach North America in the Upper Cretaceous, where they continue to diversify during the Upper Cretaceous and lower Paleocene. The first justified identification of ‘Macrobaenidae’ from the upper Paleocene of Europe, both in France and in Belgium, provides new data on the replacement process of European Late Cretaceous turtle fauna by new groups from other continents.

http://zoobank.org/urn:lsid:zoobank.org:pub:B417CC80-F47C-4AE5-B8B2-0BAA249A177F

摘要

欧洲的古新世陆地和淡水龟动物区系与上白垩纪的动物区系完全不同。该古新世动物群主要由非洲中生代记录中未发现的海龟群组成。但是，欧洲古新世遗址产生了从其他大陆散布的多个血统，包括基底海龟（即茎睾丸）和粘虫科（即Paracryptodira）。两组都在马恩省Mont de Berru的法国上古新世遗址中得到了很好的代表。这个地方的新分类单元，Gallica lapparentiana，gen。等。11月在这里进行了描述，并归因于eucryptodiran血统'Macrobaenidae'。迄今为止，在欧洲的新生代记录中还没有发现“宏藻类”。“ Macrobaenids”起源于亚洲上侏罗统。实际上，它们代表了目前以该大陆的下白垩纪记录而闻名的最多样化的海龟群。它们到达上白垩统的北美，并在上白垩统和下古新世期间继续多样化。在法国和比利时，从欧洲上古新世首次对“ Macrobaenidae”进行了合理的鉴定，提供了来自其他大陆的新群体对欧洲白垩纪海龟动物群的替代过程的新数据。

http://zoobank.org/urn:lsid:zoobank.org:pub:B417CC80-F47C-4AE5-B8B2-0BAA249A177F