Question

Did dinosaurs exit at the same as mammals ?explain your answer using the geologic time scale

Answer 1

no, mammals didn't coexist with dinosaurs at that time. For instance, the Cenozoic Era saw the emergence of mammals, whereas the Mesozoic Era saw the existence of dinosaurs.

Answer 2

Step-by-step explanation:

Mammals are the only living synapsids. The synapsid lineage became distinct from the sauropsid lineage in the late Carboniferous period, between 320 and 315 million years ago. The sauropsids are today's reptiles and birds along with all the extinct animals more closely related to them than to mammals.