The Naco Formation is a geologic formation in Arizona. It preserves fossils dating back to the Pennsylvanian subperiod.

Fossils from the Kohls Ranch locality of Gila County, Arizona, include bivalve and gastropod molluscs, brachiopods, bryozoans, crinoids, cnidarians and chondrichthyan teeth.Guide to Fossils of the Naco Formation, Kohl Ranch Area, Arizona, Arizona StateBrew, D. C. and S. Beus, 1976, A Middle Pennsylvanian Fauna from the Naco Formation near Kohl Ranch, Central Arizona. Journal of Paleontology, v. 50: pp. 888-906

See also

List of fossiliferous stratigraphic units in Arizona Paleontology in Arizona

References