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:
The Quarterly journal of the Geological Society of London . PEOCEEDINGS OF THE GEOLOGICAL SOCIETY June in making it the type of new genus Mesodoti to which must be added Gyrodus gibhosus Miinster and Pycnodus liassicus described by myself in the th Decade of the Memoirs of the Geological Survey ' plate On comparing the Scotch