Question

7 multiple choice 1 point which of the following would best describe the relations of an index fossil? trilobite, cenozoic era dinosaur, mesozoic era mammal, paleozoic era dinosaur, cenozoic era

Explanation:

To determine the correct relation for an index fossil, we analyze each option:

• Trilobites are from the Paleozoic Era, not Cenozoic, so "Trilobite, Cenozoic Era" is incorrect.
• Dinosaurs are characteristic of the Mesozoic Era, which fits the index fossil - time period relation.
• Mammals became dominant in the Cenozoic, not the Paleozoic, so "Mammal, Paleozoic Era" is wrong.
• Dinosaurs went extinct at the end of the Mesozoic, so they aren't from the Cenozoic, making "Dinosaur, Cenozoic Era" incorrect.

Answer:

B. Dinosaur, Mesozoic Era