Paronychomys alticuspis (extinct)
Found in one sample
United States: White Cone (Late Miocene)
Size measurements:
| M1 length | 1.49 mm | N = 3 | Baskin 1979 |
| M1 width | 0.98 mm | N = 3 | Baskin 1979 |
| M2 length | 1.23 mm | N = 1 | Baskin 1979 |
| M2 width | 1.00 mm | N = 1 | Baskin 1979 |
| m1 length | 1.49 mm | N = 3 | Baskin 1979 |
| m1 width | 0.98 mm | N = 4 | Baskin 1979 |
| m2 length | 1.28 mm | N = 3 | Baskin 1979 |
| m2 width | 1.01 mm | N = 4 | Baskin 1979 |
See also Paronychomys, Paronychomys woodburnei