Rodents, marsupials, and hoofed animals first appeared in North America during the _______ period.

Question

Quizplus · Accepted Answer

Rodents, marsupials, and hoofed animals first appeared in North America during the Tertiary period, which lasted from 66 million to 2.6 million years ago. This was a time of significant diversification and evolution for many types of mammals, including the emergence of modern groups such as primates and cetaceans. The Permian, Triassic, Devonian, and Cretaceous periods were all earlier periods in geological history and did not coincide with the appearance of these particular groups of mammals in North America.

Rodents, Marsupials, and Hoofed Animals First Appeared in North America