Only under unusually specific conditions would a soft-bodied creature such as a jellyfish be capable of making a fossil. If deposited in an extremely fine suspension of mud, and presuming that there were no scavenging organisms present.
Such fossils are known, and you'll find some data in wikipedia under Ediacaran.
A clam is more likely to fossilize than a jellyfish.
No a worm is more complex than a jellyfish
slug worm jellyfish
A worm, an insect, a jellyfish.
The jellyfish and the worm are both invertebrates, which means they are animals without backbones.
An "invertebrate" is an animal without a backbone, such as a jellyfish or worm.
A prehistoric worm burrow is called a trace fossil. Trace fossils are preserved evidence of the activity of organisms, such as burrows, footprints, or feeding marks, rather than the remains of the organisms themselves.
a dinosaur footprint is a trace fossil
jellyfish and i think starfish. most insects.
An invertebrate can be anything from a worm to a jellyfish(no bones or skeletor structure)
it is 100000 years old
This type of fossil is called a trace fossil, specifically a burrow or feeding trace fossil. It provides evidence of the activities of an organism without preserving the actual organism itself.