Global evidence of terminal Cretaceous extinction occurs at the boundary between Upper Cretaceous strata and __________ strata.

Question

Quizplus · Accepted Answer

The Paleocene epoch immediately follows the terminal Cretaceous extinction event and is therefore the stratigraphic boundary between Upper Cretaceous and Paleogene strata. Paleozoic and Proterozoic strata are much older and do not have any correlation with the terminal Cretaceous extinction event.

Global Evidence of Terminal Cretaceous Extinction Occurs at the Boundary