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

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

Cerapodan body fossils, however, have been harder to come by. For some time, the oldest example was a 164-million-year-old ...

Paleontologists recently announced the discovery of a new species that may help explain the history of life on Earth.