| Argillomys Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | † Multituberculata |
| Genus: | † Argillomys |
| Species: | †A. marylandensis |
| Binomial name | |
| †Argillomys marylandensis Cifelli et al., 2013 | |
Argillomys is an extinct genus of multituberculate mammal that lived in Maryland during the Aptian stage of the Early Cretaceous epoch. [1]
Argillomys marylandensis, the type and only species, is distinguished by its unique combination of morphological traits on its second molar that include a tooth enamel ornamentation consisting of ribs and grooves only, a cusp formula of 2:4, the presence of a distinct cusp on the anterobuccal ridge, the enlargement of the second cusp of the buccal row, and central position of ultimate cusp in the lingual row. [2]