Hesperoceras
| Hesperoceras Temporal range: L Mississippian
| |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Subclass: | |
| Order: | |
| Superfamily: | |
| Family: | |
| Subfamily: | Michelinoceratinae
|
| Genus: | Hesperoceras Miller & Youngquist, 1974
|
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
- Sweet, Walter C. (1964). Nautiloidea-Orthocerida. Treatise on Invertebrate Paleontology, Part K. Geological Soc of America, and Univ Kansas Press.