The peculiar mammalian fauna that inhabited Afro‐Arabia during the Paleogene first came
to the attention of the scientific community in the early part of the twentieth century, when …

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

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 …

It is a challenge to make sense of who we are. Where did we come from? Why are we so
radically different from other animals and so surprisingly similar to others? Why do our …

Questions surrounding the origin and early evolution of primates continue to be the subject
of debate. Though anatomy of the skull and inferred dietary shifts are often the focus …

Reconstructing the earliest phases of primate evolution has been impeded by gaps in the
fossil record, so that disagreements persist regarding the palaeobiology and phylogenetic …

Paleontological and neontological systematics seek to answer evolutionary questions with
different data sets. Phylogenies inferred for combined extant and extinct taxa provide novel …

Diurnal light-dark cycle resets the master clock, while timed food intake is another potent
synchronizer of peripheral clocks in mammals. As the largest metabolic organ, the liver …

Mitochondrial uncoupling protein 1 (UCP1) is essential for nonshivering thermogenesis in
brown adipose tissue and is widely accepted to have played a key thermoregulatory role in …

Adaptive shifts associated with human origins are brought to light as we examine the human
fossil record and study our own genome and that of our closest ape relatives. However, the …