The IUCN Red List of Threatened Species

Ursus arctos ssp. nelsoni

 – Extinct

Taxonomy

Kingdom: ANIMALIA
Phylum: CHORDATA
Class: MAMMALIA
Order: CARNIVORA
Family: URSIDAE
Common Name/s: MEXICAN GRIZZLY BEAR (Eng)
Infra-specific Authority: Merriam, 1914

Assessment Information

Red List Category & Criteria: EX    ver 2.3 (1994)
Year Assessed: 1996
Annotations: Out of date
Assessor/s: Bear Specialist Group
Justification: The status of the Brown Bear at the species level has been revised and updated by members of the IUCN SSC Bear Specialist Group. The new assessment has been accepted for inclusion on the 2008 IUCN Red List of Threatened Species. A draft of the new species assessment, together with the supporting documentation, can be viewed by following the link below.
History:
1982-Endangered (Thornback and Jenkins 1982)
1986-Extinct (IUCN Conservation Monitoring Centre 1986)
1988-Extinct (IUCN Conservation Monitoring Centre 1988)
1990-Extinct (IUCN 1990)
1994-Extinct (Groombridge 1994)

Distribution

Country Names: Regionally extinct:

Mexico; United States

Summary Documentation

System: Terrestrial

Data Sources

Data Sources:

Groombridge, B. (ed.) 1994. 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland.

IUCN Conservation Monitoring Centre. 1986. 1986 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

IUCN Conservation Monitoring Centre. 1988. 1988 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

IUCN. 1990. 1990 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

Thornback, J. and Jenkins, M. 1982. The IUCN Mammal Red Data Book. Part 1: Threatened mammalian taxa of the Americas and the Australasian zoogeographic region (excluding Cetacea). IUCN, Gland, Switzerland.


Citation: Bear Specialist Group 1996. Ursus arctos ssp. nelsoni. In: IUCN 2007. 2007 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 08 March 2008.
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