how old is the oldest known dinosaur quizlet
Palaeontologists have found what is likely to be the oldest known dinosaur, filling in a yawning evolutionary gap. A study in Biology Letters describes Nyasasaurus parringtoni, a new species from 10-15 million years before the previous earliest dinosaur specimens.
Early bird beat Archaeopteryx to worm by 10m years. The fossilised 'Dawn bird', Aurornis xui, lived 160m years ago and had downy feathers but was probably unable to fly. Aurornis xui 'pushes Archaeopteryx off its perch' as the oldest known member of the bird lineage.