Image

Using index fossils

Diagram: Trilobites, ammonites and belemnites as index fossils

Trilobites lived at a different time to ammonites and belemnites. Finding a trilobite fossil in a rock tells you the rock was formed in the Paleozoic era.

Rights: The University of Waikato Te Whare Wānanga o Waikato
Published:11 May 2011Size: 107.72 KB