Which of the following shows the correct chronological order (geologically oldest to most recent)of near or total extinctions for the organisms listed?
A)dinosaurs,psilopsids,marine invertebrates,large mammals
B)psilopsids,marine invertebrates,dinosaurs,large mammals
C)large mammals,marine invertebrates,dinosaurs,psilopsids
D)marine invertebrates,dinosaurs,psilopsids,large mammals

Question

Quizplus · Accepted Answer

Psilopsids (early vascular plants) declined during the Devonian period, marine invertebrates suffered greatly during the Permian-Triassic extinction event, dinosaurs went extinct at the end of the Cretaceous period, and large mammals faced extinctions in the Quaternary period, making B the correct chronological order.

Which of the Following Shows the Correct Chronological Order (Geologically