Johns Valley Formation
The Johns Valley Formation is a geologic formation in Arkansas and Oklahoma. It preserves fossils dating back to the Carboniferous period.Paleofauna
- Acanthocladia
- Fenestella
- Leioclema
- Rhombopora
- Sulcoretepora
- Bactrites
- Cravenoceras
- Cyclocerid
- Dentoceras
- Eumorphoceras
- Gastrioceras
- Girtyoceras
- Glaphyrites
- Goniatites
- Homoceratoides
- Mariceras
- Metacoceras
- Mitorthoceras
- Mooreoceras
- Neoglyphioceras
- Orthoceracone
- Paracravenoceras
- Paradimorphoceras
- Pseudoparalegoceras
- Pseudothoceras
- Rayonnoceras
- Stenopronorites
