Notoparamys
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Notoparamys is an extinct genus of paramyine rodent that lived in North America during the Wasatchian.
| Notoparamys Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | †Paramyidae |
| Subfamily: | †Paramyinae |
| Genus: | †Notoparamys Korth, 1984 |
| Type species | |
| Notoparamys arctios Korth, 1984 | |
| Other species | |
| |
Description
Notoparamys possessed a midbrain partially exposed between the cerebellum and cerebrum but lacked visible rostral colliculi.[1] The incisor enamel of Notoparamys costilloi was pauciserial. The mandibular fourth premolar of N. costilloi had a pattern of Hunter-Schreger bands known as an S-type schmelzmuster. Occlusion in N. costilloi was characterised by mesiolingual movement of the mandibular molars across the maxillary ones in a similar fashion to the closely related Paramys.[2]