Horn corals fossilized and preserved in Middle Paleozoic limestones exposed in the Dragoon Mountains, Cochise Co. (Photo by Esty Pape)
Rumery, J.V. , 1980, Fossils of Arizona: a selected bibliography: https://library.azgs.arizona.edu/item/AOFR-1552430683694-866
Photographer: Esty Pape
Photo Date: 2002