Cotteroceras is a genus of proterocameroceratids from the Lower Ordovician of North America and Siberia characterized by a long straight and compressed shell with very short camerae and long body chamber. Sutures are straight and oblique, sloping dorsoventrally toward the apex. The siphuncle is large but details are unknown.
| Cotteroceras Temporal range:
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|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | †Endocerida |
| Family: | †Proterocameroceratidae |
| Genus: | †Cotteroceras Ulrich & Foerste, 1936 |
| Species: | †C. compressum
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| Binomial name | |
| †Cotteroceras compressum Ulrich & Foerste, 1936
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References
edit- Teichert, C, 1964. Proterocameroceratidae, pp 166– 170 in the Treatise on Invertebrate Paleontology Part K. Geol Soc of America and Univ of Kansas Press.