Which statement about the geologic time scale is false?
A) Mammals originated early in the Mesozoic era.
B) Radiations of marine invertebrates took place in the Mesozoic era.
C) Mass extinction of the dinosaurs occurred about 65 million years ago.
D) Reptiles originated during the Paleozoic era.
E) Eukaryotes originated during the Proterozoic eon.

Question

Which statement about the geologic time scale is false?
A) ​Mammals originated early in the Mesozoic era.
B) ​Radiations of marine invertebrates took place in the Mesozoic era.
C) ​Mass extinction of the dinosaurs occurred about 65 million years ago.
D) ​Reptiles originated during the Paleozoic era.
E) ​Eukaryotes originated during the Proterozoic eon.

Quizplus · Accepted Answer

Radiations of marine invertebrates primarily took place during the Paleozoic era, not the Mesozoic era.

Which Statement About the Geologic Time Scale Is False