| Rangeroceras Temporal range:
| |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | †Dissidocerida |
| Family: | †Rangeroceratidae |
| Genus: | †Rangeroceras Hook & Flower, 1977 |
Rangeroceras is an extinct orthoceratoid cephalopod genus that lived in what is now western North America during the latter part of the Early Ordovician.