Rugose coral: Acrocyathus floriformis (PRI70756)

Description

Fossil specimen of the colonial rugose coral *Acrocyathus floriformis* from the Mississippian St. Louis Limestone of Monroe County, Illinois. Specimen is from the collections of the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York. Model by Emily Hauf.