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 . KIEKBY ON MAEINE FOSSILS IN THE Lower still at feet in grey shale overlying another bed of limestone Myalina modioUformis appears in great numbers Along with it and in the limestone are the following species Fossils of Zone feet just to the east of the Target Billow