Thousands of Late Pleistocene remains are found in sites throughout Beringia. These specimens comprise an Ice Age genetic museum, and the DNA contained within them provide a means to observe evolutionary processes within populations over geologically significant time scales. Phylogenetic analyses can identify the taxonomic positions of extinct species and provide estimates of speciation dates. ...

To study the paleoenvironment and paleoclimate of eastern Beijing Plain, this paper, based on particle size analysis sporopollen analysis, constructs a sediment chronological framework. Combining with previous research outcomes, it reveals evolution process rules Plain. The shows that climate environment Plain has changed from humid cold, warm to dry cool, which provides some basis for studying...

Analysis of fossil birds from the Oligocene Jebel Qatrani Formation in the Fayum depression of Egypt, site of the oldest known hominoid primates, allows precise paleoenvironmental reconstruction of the climatic and biotic conditions that influenced some of the earliest stages of hominoid evolution. Unlike the fossil mammals of the Fayum, which belong largely to extinct groups, most of the birds...