rapid burial and hard parts
It is called a mold fossil, which can become a cast fossil. After the soft parts of the animal rot away, a cavity remains (the mold fossil) which becomes filled with hardened sand or mud (the cast fossil).
Trace
trace
fossil
A fossil type characterized by an open space left inside a rock by an organism that has decayed is called a mold fossil. Mold fossils are created when the organism decomposes and the impression is preserved in the sediment that surrounds it, leaving behind a cavity in the shape of the organism.
foot prints and ammonites mainly, but any kind of organism if it had any contact with mud, under the right condition, it might just becomes a fossil
It is called a mold fossil, which can become a cast fossil. After the soft parts of the animal rot away, a cavity remains (the mold fossil) which becomes filled with hardened sand or mud (the cast fossil).
A fossil is a trace of an organism that lived long ago.
fossil
No coral is NOT sediment. Coral SAND is a sediment but the coral itself is a living organism - if buried and lithified, the coral becomes a fossil.
a helix fossil is a fossil that becomes an omanyte
trace
trace
Trace
The oldest fossil organism found lived approximately 3.5 billion years ago. The fossil is that of a single-celled organism called Archaea.
a cast fossil
not really fossil is made from dead organism