Naco Formation

{{Full citations needed|date=February 2024}}

{{Short description|Geologic formation in Arizona}}

{{Infobox rockunit

| name = Naco Formation

| image =

| caption =

| type = Formation

| age = Pennsylvanian

| period = Pennsylvanian

| prilithology = Limestone

| otherlithology = Shale, siltstone

| namedfor =

| namedby =

| region = Arizona

| country = United States

| coordinates =

| unitof =

| subunits =

| underlies =

| overlies =

| thickness =

| extent =

| area =

| map =

| map_caption =

}}

File:Indian Gardens Paleo Site with the Naco Formation exposed and available to the public.jpg

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

File:Indian Gardens Paleo Site approximately 12 miles east of Payso Arizona on highway 260.jpg

Fossils from the Kohls Ranch locality of Gila County, Arizona, include bivalve and gastropod molluscs, brachiopods, bryozoans, crinoids, cnidarians and chondrichthyan teeth.[http://www.savalli.us/BIO113/113downloads/FossilIDGuide.pdf Guide to Fossils of the Naco Formation, Kohl Ranch Area, Arizona, Arizona State]Brew, 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

File:Indian Gardens Paleo Site with Species Identification Sign.jpg