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 ...

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 ...

The fossil of a tiny creature found in northeast China is helping scientists determine when mammals split into different groups: those with babies that develop inside their mothers and those that ...

A new study published in Nature Ecology & Evolution reveals how the complex interaction between maternal and fetal tissues evolved in placental mammals. Researchers from the University of Vienna, Yale ...

One of the grand things about crowdsourcing is how it allows us to take part in things we love. And if what you love is our “hypothetical placental ancestor” (and let’s be frank, who doesn’t?) your ...

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 ...