| Chouteau Formation | |
| Type: | Formation |
| Age: | Carboniferous |
| Period: | Carboniferous |
| Namedfor: | Chouteau Springs Cooper County, Missouri, Missouri[1] |
| Namedby: | George Clinton Swallow |
| Region: | Illinois, Iowa, Kansas, Missouri |
| Country: | United States |
The Chouteau Limestone is a geologic formation in Illinois, Iowa, Kansas, and Missouri. It preserves fossils dating back to the Carboniferous period.[2]