This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Strata identified by organized fossils Tab. BHL. Strata identified by organized fossils containing prints on colored paper of the most characteristic specimens in each stratum Tab Text Illustration biodiversitylibrary org title Smith William Public domain The BHL considers that this work is no longer under copyright protection