| Altiplano chinchilla mouse Temporal range:
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|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Subfamily: | Sigmodontinae |
| Tribe: | Phyllotini |
| Genus: | Chinchillula Thomas, 1898 |
| Species: | C. sahamae
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| Binomial name | |
| Chinchillula sahamae Thomas, 1898
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| Distribution of Chinchillula sahamae according to Eisenberg & Redford, 2000 | |
The Altiplano chinchilla mouse or achallo (Chinchillula sahamae) is a species of rodent in the family Cricetidae. It is the only species in the genus Chinchillula. It is found in Argentina, Bolivia, Chile, and Peru.