Around 25 million years ago, an evolutionary split occurred between our ancestors, the precursors of humans and apes, and ...

Losing their kitten features is part of every cat’s growth journey, but the process rarely follows a predictable path. What starts out small and subtle can turn bold and exaggerated as time passes.

Some 99 million years ago, a juvenile dinosaur got its feathery tail stuck in tree resin, a death trap for the small creature. But its misfortune is now giving scientists unique insight into feathered ...

When you think about a whale, you probably picture an enormous sea creature without legs. But what if I told you the first whale had four legs and could walk on land? I talked about whales and other ...

A tiny spider frozen in 100-million-year-old amber is changing what scientists thought they knew about spider evolution. This prehistoric creature had spinnerets like modern spiders, but also a long ...

As early vertebrates emerged from the water, their tails may have played a crucial role in helping them move across land, a new study reports. The results, based on animal and robot models, as well as ...

Understanding both the role of selection in driving phenotypic change and its underlying genetic basis remain major challenges in evolutionary biology. Here, we use modern tools to revisit a classic ...

Researchers find that the molecular mechanisms underlying tail regeneration in West African lungfish are similar to those seen in amphibians, suggesting the trait evolved in a common ancestor. For ...