The earliest mass extinction event identified in the geologic record occurred about 446 million years ago at the end of the Ordovician Period.Which of the following situations/events coincided with this mass extinction?
A) continental glaciation
B) large scale volcanism
C) meteorite impact
D) extreme greenhouse conditions
E) major continental collisions

Question

Quizplus · Accepted Answer

The end of the Ordovician Period mass extinction is associated with a significant glaciation event that led to a drop in sea levels and a corresponding reduction in habitable shallow marine environments, which were crucial for many organisms at the time.

The Earliest Mass Extinction Event Identified in the Geologic Record