Þ From the hard parts of animals that don’t decay easily (bones, teeth, shells, claws)
Þ
From parts of organisms that haven’t decayed as conditions for decay are absent, oxygen, water, warmth, etc.
Þ From parts of the organism that are replaced by other materials (i.e. minerals) as they decay
From preserved traces of organisms i.e. footprints, burrows + rootlet traces
Comments
No comments have yet been made