Following the reptilian extinctions at the close of the Mesozoic, two groups of mammals, the marsupials and______ , evolved.
A) stromatolites
B) placentals
C) eukaryotes
D) cephalopods
E) trilobites

Question

Quizplus · Accepted Answer

The two groups of mammals that evolved after the extinction of reptiles were marsupials and placentals. Option A, C, D, and E are not related to the evolution of mammals.

Following the Reptilian Extinctions at the Close of the Mesozoic