Question

A trilobite fossils has been used to tell us how life on earth has changed. Trilobite fossils are examples of?

A:mold and cast fossil
B:index fossil
C:trace fossil
D:petrified fossils

Answer 1

B:index fossil

Step-by-step explanation:

The trilobite fossils are examples of index fossils.

Index fossils are most desirable for stratigraphic construction and to predict ancient life forms on earth.

• Index fossils are fossils with the following characteristics;

1. They have short stratigraphic span
2. They have a wide geographic distribution
3. Shows rapid evolutionary trends or changes.

Trilobite is one of such fossils that have the above listed properties.