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Extinct species of mammal From Wikipedia, the free encyclopedia
Equus conversidens, or the Mexican horse, was a Pleistocene species of horse, now extinct, that inhabited North America.
| Equus conversidens Temporal range: | |
|---|---|
| |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Perissodactyla |
| Family: | Equidae |
| Genus: | Equus |
| Subgenus: | incertae sedis |
| Species: | †E. conversidens |
| Binomial name | |
| †Equus conversidens Owen, 1869 | |
| Synonyms | |
The holotype of Equus conversidens, a partial palate, was unearthed in Pleistocene deposits northeast of Mexico City, Mexico. In January 1963, a partial skeleton was found in the city of Canyon, Texas in a white clay bed during the excavation of a basement, and was referred to E. conversidens by Dalquest and Hughes (1965), who interpreted the species as medium to small-sized, and added additional records of the species from Texas (including a skeleton from Slaton), Arizona, New Mexico, Oklahoma, Kansas and Florida, synonymizing Equus francisci, Equus tau, E. littoralis, E. achates, and E. barcenaei with E. conversidens.[3]
Winans (1985) and MacFadden (1992) challenged the validity of E. conversidens due to its minimal diagnostic value, and treated E. francisci as valid.[4][5] Heintzman, et al. (2017) argue that it is in not a member of the Equus genus.[6]
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