Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. While humans and dinosaurs only co-existed in cartoons like The ...

A tiny, furry-tailed creature is the most complete picture yet as to what the ancestor of mice, elephants, lions, tigers, bears, whales, bats and humans once looked like, researchers say. These new ...

Placental mammals have a placenta, an organ that develops during gestation and bridges mother and fetus. The placenta provides nutrients to the fetus to develop in the womb, protecting the baby from ...

Previous molecular analyses of mammalian evolutionary relationships involving a wide range of placental mammalian taxa have been restricted in size from one to two dozen gene loci and have not ...

It was about six inches long from head to tail, a furry, shrew-like tree-climber that ate insects and maybe worms, and probably hid out during the day to stay away from marauding dinosaurs. This small ...

A new fossil analysis gives hints. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. About 62 million years ago — only 4 million years after an ...

“The Flintstones” may now be considered historical fiction. A new paper published in the journal Current Biology suggests that human ancestors lived with dinosaurs for a short time before the ...

Every spring I bring my students to the desert of northwestern New Mexico, just north of Chaco Canyon, where the ancestral Pueblo people built a great city out of rocks a millennium ago. As we hike ...

Placental mammals all bear live young that are nourished via an organ in-utero. The study revealed that a Cretaceous origin for placental mammals, the diverse group that includes humans, dogs, and ...