| Tocantins vesper mouse | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Subfamily: | Sigmodontinae |
| Genus: | Calomys |
| Species: | C. tocantinsi |
| Binomial name | |
| Calomys tocantinsi | |
The Tocantins vesper mouse (Calomys tocantinsi) is a South American rodent species of the family Cricetidae. [2] [3] It is found in Brazil. Its karyotype has 2n = 46 and FNa = 66. [2]