| Hesperoceras Temporal range: L Mississippian | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | Orthocerida |
| Superfamily: | Orthocerataceae |
| Family: | Orthoceratidae |
| Subfamily: | Michelinoceratinae |
| Genus: | Hesperoceras Miller & Youngquist, 1947 |
Hesperoceras is an orthocerid cephalopod belonging to the subfamily Michelinoceratinae which comes from the lower Mississippian of New Mexico.
Hesperoceras has a straight, orthoconic, shell with a subrectangular cross section. The sutures are straight and transverse on the narrow sides but form broad rounded lobes on the wide sides, and the siphuncle is small and central.
References
- Miller, A.K. and Youngquist, W. (1947). The discovery and significance of a cephalopod fauna in the Mississippian Caballero Formation of New Mexico. Journal of Paleontology 21(2):113-117. JSTOR 1299455
- Sweet, Walter C. (1964). Nautiloidea-Orthocerida. Treatise on Invertebrate Paleontology, Part K. Geological Soc of America, and Univ Kansas Press.
| Taxon identifiers | |
|---|---|
| Hesperoceras | |