Question

What evidence suggests that a mass extinction of the dinosaurs occurred at the end of the

Cretaceous Period?
A)
an absence of dinosaur fossils in Paleocene bedrock
B)
drawings of dinosaurs made by humans in caves during the Paleocene Epoch
C)
an abundance of dinosaur fossils in Early Cretaceous bedrock
D)
evolution of dinosaurs during the Late Cretaceous Epoch

Answer 1

C)

an abundance of dinosaur fossils in Early Cretaceous bedrock

Step-by-step explanation:

The key piece of evidence is an oddly high amount of the metal iridium in what’s known as the Cretaceous-Paleogene, or K-Pg, layer