Question

what is Cambrian period

Answer 1

The Cambrian Period was the first geological period of the Paleozoic Era, of the Phanerozoic Eon.

Answer 2

The Cambrian Period is the first geological time period of the Paleozoic Era (the “time of ancient life”). This period lasted about 53 million years and marked a dramatic burst of evolutionary changes in life on Earth, known as the "Cambrian Explosion