The precise pattern and timing of speciation events that gave rise to all living placental
mammals remain controversial. We provide a comprehensive phylogenetic analysis of …

To discover interordinal relationships of living and fossil placental mammals and the time of
origin of placentals relative to the Cretaceous-Paleogene (K-Pg) boundary, we scored 4541 …

Previous analyses of relations, divergence times, and diversification patterns among extant
mammalian families have relied on supertree methods and local molecular clocks. We …

Palaeobiogeographic reconstructions are underpinned by phylogenies, divergence times
and ancestral area reconstructions, which together yield ancestral area chronograms that …

Inflammatory bowel disease (IBD) is an autoimmune condition that is difficult to diagnose,
and animal models of this disease have questionable human relevance 1. Here, we show …

The fossil record suggests a rapid radiation of placental mammals following the Cretaceous–
Paleogene (K–Pg) mass extinction 65 million years ago (Ma); nevertheless, molecular time …

Phenotypic convergence between distantly related taxa often mirrors adaptation to similar
selective pressures and may be driven by genetic convergence. The giant panda …

Dating the tree of life is a core endeavor in evolutionary biology. Rates of evolution are
fundamental to nearly every evolutionary model and process. Rates need dates. There is …

Cetaceans form one of the most unique groups in the evolutionary history of mammals. They
have returned to the sea and modified their tail as an efficient means of locomotion. As they …

Mammals are the most encephalized vertebrates, with the largest brains relative to body
size. Placental mammals have particularly enlarged brains, with expanded neocortices for …