Question

bivalve fossils are another popular target for fossil hunters. a bivalve fossil is the remains of an animal, such as a mollusk, with two bowl - shaped shells that fit together on a hinge. the two shells sometimes separate during the fossilization process. which term matches the picture?
options: ammonite fossil, bivalve fossil, trilobite fossil

Explanation:

The fossil in the image has a spiral - shaped structure. Ammonite fossils are known for their beautiful spiral - shaped shells, while bivalve fossils have two bowl - shaped shells that fit together on a hinge and trilobite fossils have a different, segmented appearance. So the fossil in the picture matches the description of an ammonite fossil.

Answer:

ammonite fossil