Fossils of armour headed fishes and trilobites would be found in marine sedimentary rocks of_____
A) the Proterozoic Eon
B) the Mesozoic Era
C) the lower part of the Paleozoic Era
D) the Carboniferous Period

Question

Quizplus · Accepted Answer

Armour-headed fishes (placoderms) and trilobites are most commonly associated with the Paleozoic Era, particularly in its earlier periods. The lower part of the Paleozoic Era, which includes the Cambrian, Ordovician, and Silurian periods, is known for the abundance of marine life, including the first appearance of many types of organisms such as trilobites.

Fossils of Armour Headed Fishes and Trilobites Would Be Found