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:
American Permian vertebrates BHL. American Permian vertebrates by Samuel Williston Table of Contents biodiversitylibrary org title Williston Samuel NOTINCOPYRIGHT Biodiversity Heritage Library Check categories November PDold American Permian vertebrates Images uploaded by Files from the Biodiversity Heritage Library