摘要
Based on a quantitative and qualitative analysis, biochronological boundaries are refined to correspond to major faunal turnovers, and an improved age correlation and biogeography of the Paleocene and Early Eocene Asian Land Mammal Ages (ALMAs) is proposed. The start of the Gashatan is therefore correlated with the start of North American Tiffanian-5a. The start of the Bumbanian ALMA is marked by the first appearance of artiodactyls, perissodactyls and true primates, similar to their appearance in North America and Europe at the start of the Eocene, and is correlated to the Paleocene-Eocene boundary.