| Abrothrix olivaceus markhami | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Synapsida |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Genus: | Abrothrix |
| Species: | A. olivaceus |
| Subspecies: | A. o. markhami |
| Trinomial name | |
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Abrothrix olivaceus markhami (Pine, 1973) |
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| Synonyms | |
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Abrothrix olivaceus markhami, also known as the Wellington Akodont or Markham's Grass Mouse, is a subspecies of the South American rodent Abrothrix olivaceus. It occurs on Wellington Island and the nearby Southern Patagonian Ice Field in southern Chile. It was previously recognized as a valid species, but is close to other recognized subspecies of A. olivaceus.