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The spaces allow the animal to send time outside while protecting them and their possible prey.

In 2003, Greg Wilson Mantilla, who at the time was a Doctor of Philosophy candidate at UC Berkeley, was examining fossils from excavations in Hell Creek, Montana, which had been directed by his advisor William Clemens. Initially labeled as mammal, the fossils had “slipped past careful study.” “At that time, no one was studying them, so they were just put in a drawer and they weren’t identified,” Wilson Mantilla, now a professor in the department of biology and a curator of vertebrate paleontology at the Burke Museum at the University of Washington, said. “I recognized them as Purg...

Our earliest primate ancestors rapidly spread after dinosaur extinction The small, furry ancestors of all primates — a group that includes humans and other apes — were already taking to the trees a mere 100,000 years after the mass extinction that wiped out the dinosaurs and most other terrestrial animals, according to a new analysis of fossil teeth in the collections of the University of California Museum of Paleontology (UCMP). The analysis showed that the teeth are the earliest-known fossil evidence of any primate, dating from about 65.9 million years ago — 105,000 to 139,000 years a...

The researchers analyzed several fossils of Purgatorius, the oldest genus in a group of the earliest-known primates called plesiadapiforms. These ancient mammals were small-bodied and ate specialized diets of insects and fruits that varied by species. These newly described specimens are central to understanding primate ancestry and paint a picture of how life on land recovered after the Cretaceous-Paleogene extinction event 66 million years ago that wiped out all dinosaurs—except for birds—and led to the rise of mammals. The team analyzed fossilized teeth found in the Hell Creek area of ...

Researchers at The University of New Mexico are tied to a new study published in the journal “Royal Society Open Science” that documents the earliest-known fossil evidence of any primate. Associate Professor Jason Moore, of UNM Honors College, and Wade...