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

Question

Quizplus · Accepted Answer

Armour headed fishes and trilobites are characteristic fossils of the lower part of the Paleozoic Era, specifically the Cambrian and Ordovician periods. Therefore, their fossils would be found in marine sedimentary rocks from this time period. Option B is incorrect because the Carboniferous Period is part of the later part of the Paleozoic Era and does not contain fossils of armour headed fishes and trilobites. Option C is incorrect as this time period is much older and does not contain fossils of these organisms, and option D is incorrect as the Mesozoic Era is much later and does not contain fossils of these organisms either.

Fossils of Armour Headed Fishes and Trilobites Would Be Found