The Mesozoic Era is a time in the Earth's history when
A) the first abundant shelly organisms appeared in the fossil record.
B) the Earth's interior was so hot that a solid outer crust,if present,was likely being extensively remelted.
C) stable continental interiors,termed cratons,first formed.
D) the dinosaurs appeared and came to dominate large-scale terrestrial life.

Question

Quizplus · Accepted Answer

The Mesozoic Era is commonly referred to as the Age of Dinosaurs, as it was during this time that the dinosaurs first appeared and came to dominate the terrestrial ecosystem. While the other options may be true to varying degrees during the Mesozoic Era, none are as defining as the presence and dominance of the dinosaurs.

The Mesozoic Era Is a Time in the Earth's History