Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been ...

“I like to apply the term ‘bird’ to what I think of as the ‘modern bird group’, that is, the most recent common ancestor of all living birds and all its descendants. To me that’s an unambiguous ...

2025 — New research has revealed that birds, reptiles, and mammals have developed complex brain circuits independently, despite sharing a common ancestor. These findings challenge the ...

Rather, birds are included in this diagram because ... that the feature was most likely also present in the animals' common ancestor. Of course, not just the platypus but every living organism ...

Even when there are fewer than five digits in the adult animal -- as in horses' hooves and the wings of bats and birds -- it turns ... descended from a common ancestor that just happened to ...

For example, modern birds are grouped into the Neornithes clade, because they all emerged from a common Neornithine ancestor that emerged 80 million years ago, before the nonavian dinosaurs went ...

Paleontologists continue to discuss the possibility of their even earlier presence in the common ancestor of dinosaurs ... of scales into feathers on the bird’s feet. Recreating the first ...

Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been widely debated ...