Question

multiple choice 6.15 points
which of the following periods saw the greatest animal diversification of phyla, and was the beginning of most current animal phyla (major groupings)?
ordovician
silurian
cambrian
archaean

Explanation:

The Cambrian period is known for the Cambrian Explosion, which was a rapid diversification of life - forms and the origin of most major animal phyla. The Ordovician and Silurian periods followed the Cambrian and had less dramatic diversification of phyla. The Archaean is an eon that predates the Cambrian and had much simpler life - forms.

Answer:

C. Cambrian