Question

The first known bird fossils date to which era of time

Answer 1

The first known bird fossil date to the mesozoic era of time.

Explanation:

• The first known bird fossil is  Archaeopteryx.
• Archaeopteryx were not exactly like modern birds and are called dinosaur like birds..
• Carbon dating suggest that these birds evolved during the jurassic period of mesozoic era.
• These are considered as the only birds of that era.
• Ancestors of modern birds began to evolve during cretaceous period  and kept on evolving through Cenozoic era.

Answer 2

Answer:

Jurassic

Explanation:

I took the test for pf