In which era did mammals emerge?
A. Cenozoic
B. Mesozoic
C. Paleozoic
D. Precambrian
Answer (1)
Mammals emerged during the late Triassic period of the Mesozoic era, but they became more diverse in the Cenozoic era. The Cenozoic is often called the 'Age of Mammals' because of their rapid evolution and dominance after the extinction of the dinosaurs. Earlier eras, like the Paleozoic and Precambrian, primarily involved simpler life forms. ;
