Question

question 1 (2.5 points)
most animal lineages evolved during the ____ period.
cretaceous
devonian
ordovician
silurian
cambrian

Explanation:

The Cambrian period is known for the Cambrian explosion, a rapid diversification of life forms. During this time, most major animal phyla (lineages) appeared in the fossil record. The Cretaceous is known for dinosaurs (but mass extinction at the end). The Devonian is the "Age of Fishes". The Ordovician had significant marine invertebrate evolution but not as extensive as the Cambrian for the origin of most animal lineages. The Silurian had the rise of vascular plants and early jawed fish but again, the Cambrian is when most animal lineages first evolved.

Answer:

Cambrian