The Grande Coupure corresponds to a major episode of faunal turnover in western Europe around the Eocene-Oligocene boundary that is generally attributed influx multiple clades Asian mammals. However, mammal begin appear fossil record southeastern during middle Eocene, 5–10 million years prior Coupure. How and when these colonized remains poorly understood, partly because mammals from nearby Ana...

Dramatic early Cenozoic climatic shifts resulted in faunal reorganization on a global scale. Among vertebrates, multiple groups of mammals (e.g., adapiform and omomyiform primates, mesonychids, taeniodonts, dichobunid artiodactyls) are well known from the Western Interior North America warm, greenhouse conditions Eocene, but dramatic drop diversity these groups, along with introduction more dry...

The Paleogene record of caviomorph rodents has substantially increased over the last decades, and their evolutionary history better understood by discovery earliest representatives, so far recorded in several pre-Deseadan localities Peruvian Amazonia. We report here new fossils from Balsayacu area Peru (TAR-55/TAR-55bis, TAR-76 TAR-77 localities, San Martín Department). study this material reve...