The fossil record indicates that the immediate ancestors of modern marine animals diversified in the ____ period, right

after the ____ extinction.



a. Ordovician; Cambrian

b. Jurassic; Triassic
c. Carboniferous; Devonian
d. Paleogene; Cretaceous
e. Triassic; Permian


ANSWER: e

Biology & Microbiology

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