Mexican grizzly bear

The Mexican grizzly bear (Ursus arctos horribilis, formerly Ursus arctos nelsoni) is an extinct population of the grizzly bear in Mexico.

Mexican grizzly bear
Diorama featuring Mexican grizzlies at the Field Museum of Natural History in Chicago, Illinois, USA

Extinct (1964)  (IUCN 3.1)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Ursidae
Genus: Ursus
Species:
Subspecies:
U. a. horribilis
Trinomial name
Ursus arctos horribilis
Synonyms
  • Ursus arctos nelsoni
  • Ursus horribilis nelsoni
  • Ursus nelsoni

The holotype was shot by H. A. Cluff at Colonia Garcia, Chihuahua, in 1899. The extinct California grizzly bear extended slightly south into Baja California. The bears in Durango, Chihuahua, Sonora and central Mexico were likely more related to the bears of Arizona, New Mexico and Texas than to those of California.

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