You pick up a sandstone. in the rock sample you see an impression of a sea shell in the rock. this type of fossil is a

Any fossilized impression made on a surface is known as a mold fossil. These fossils occur when animals, rocks, shells, etc. get fossilized on a surface, engraving their shape on the substract.

→ Please look at the images below, so you get an idea of what mold fossils look like.

Hope it helped,

BioTeacher101

Hello. This question is incomplete. The full question is:

"You pick up a sandstone. In the rock sample you see an impression of sea shell in the rock. This is a fossil is a .

a)mold  b) cast  c) permineralized fossil  d) pseudofossil"

a)mold

Explanation:

Mold is a type of fungus also known that has a black or greenish color and appears easily in humid and dark environments, besides appearing easily in foods such as breads and cookies. However, it can also appear in bathrooms, sinks, basements, wood, paper and even on rocks.

If you stick to a sandstone and see the immersion of a seashell on the rock, you are probably seeing a fossil of mold.