Clam shells are quite durable.
A clam.
A clam is more likely. Jellies have no bones.
A clam is more likely to fossilize than a jellyfish.
Because it is more resistant to biological and environmental destruction.
Jellies have no bones. When they die, they just dissolve.
A mammoth is more likely to fossilize than a caterpillar because a caterpillar has no hard tissue. Bones and cartilage are much more likely to fossilize.
Materials that are unlikely to fossilize include soft tissues like muscles and organs, as they decay quickly. Similarly, materials that easily decompose, such as feathers and hairs, are less likely to become fossils. Substances that dissolve easily in water, like salts and some minerals, are also less likely to fossilize.
Bones typically fossilize the most. There are some examples of fossilized feathers and hair, but it's rare.
snail
A fox would be the most likely. A moth is smaller, and therefore would take less time to decompose. However, for anything to(technically) fossilize takes a very long time
Clam
The umbo which is located at the anterior end of the clam