In the kits, the coprolite (1), theropod track (17), and synapsid track (18) are trace fossils. Unaltered hard parts - The body fossil is made up of exactly the same material as when it entered the ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. A famous fossil unearthed almost 100 years ago has turned out to be a fake. The fossil ...

Using the principle of faunal succession, if an unidentified fossil is found in the same rock layer as an index fossil, the two species must have existed during the same period of time (Figure 4).