Evolution of the earliest mammals shows successive episodes of diversification. Lineage-
splitting in Mesozoic mammals is coupled with many independent evolutionary experiments …

In 1942, Walls described the concept of a 'nocturnal bottleneck'in placental mammals, where
these species could survive only by avoiding daytime activity during times in which …

Winner, 2010 PROSE Award for Excellence in the Biological Sciences. Professional and
Scholarly Publishing division of the Association of American Publishers In this unique book …

In the tradition of GG Simpson's classic work, Kenneth D. Rose's The Beginning of the Age of
Mammals analyzes the events that occurred directly before and after the mysterious KT …

In spite of their relatively small size as a group of insects, dung beetles have attracted an
inordinate amount of scientific interest over the years, starting with the work of the French …

The extinction of dinosaurs at the Cretaceous/Paleogene (K/Pg) boundary was the seminal
event that opened the door for the subsequent diversification of terrestrial mammals. Our …

Northeast China's Early Cretaceous Yixian Formation preserves spectacular fossils that
have proved extraordinarily important in testing evolutionary hypotheses involving the origin …

Phylogenetic comparative methods provide a powerful way of addressing classic questions
about tempo and mode of phenotypic evolution in the fossil record, such as whether …

The global prominence of snakes in religion, myth, and folklore underscores our deep
connection to them—but why, when few of us have firsthand experience? The answer, Isbell …

By the end of the Eocene (37 Ma), species of the genus Hesperocyon began to appear. A
single species, H. gregarius, has been found in the badlands of the western Great Plains …