Type Formation Thickness up to 100 ft. Country United States Overlies Chattanooga Shale | Unit of Boone Formation Other Chert Primary Limestone | |
Regions Arkansas, Missouri, Oklahoma | ||
The St. Joe Formation is a geologic formation in northern Arkansas, southern Missouri and northeastern Oklahoma. It preserves fossils of the Mississippian subperiod including crinoids, brachiopods, bryozoa, conodonts, blastoids, ostracods and rugose coral.
References
St. Joe Formation Wikipedia(Text) CC BY-SA