While Thrinaxodon liorhinus didn’t yet have the sophisticated hearing equipment of modern mammals, it shows that eardrums began evolving much earlier than assumed.

Ancient skull reveals our ears began evolving 50 million years earlier than thought, inside the jaw of a 250-million-year-old ...

Biologists have long drawn the animal family tree with a hazy base, unsure which creature first split from the common ancestor that gave rise to everything from jellyfish to humans. Now, a new genomic ...

A new Nature Communications study has tracked these lulls in cassiopea jellyfish, which belong to a 500 million year-old ...

A newly identified tiny dinosaur, Foskeia pelendonum, is shaking up long-held ideas about how plant-eating dinosaurs evolved.

In the realm of marine biogeography, there is a widely held scientific principle: the Atlantic and Indo-Pacific oceans are ...

Scientists have uncovered a 400-million-year-old genetic secret that gave spiders the ability to produce silk and weave their ...

Despite growing into the largest animals ever to walk on land, sauropods began life small, exposed, and alone. Fossil ...

The molecular clock theory posits that genetic changes happen steadily and gradually, offering a reliable means for peering into the past and theorizing when complex life first emerged. However, there ...

A new study comparing 59 species of primates linked same-sex sexual behavior to scarce resources and more predators in socially complex species. The findings show diverse sexual behaviors are common — ...

The findings represent the oldest complete set of genetic information from this bacterial group and shed light on its ...