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Blacks Gulch ACEC

Blacks Gulch

 Blacks Gulch ACEC

Location:   Northwest District, White River Field Office

Size:    800 acres

Designated:  1997 White River Resource Management Plan Record of Decision

Land Manager:   Bureau of Land Management, White River Field Office


Blacks Gulch is the best fossil vertebrate locality in Colorado from the Lysite Age (middle-early Eocene) . It has produced several hundred good mammal fossils including Lophiparamys debequensis. This site also contains Lysitean fauna. Possibly the best known speicimen of Cantius abditus (primate) upper jaw was collected under BLM permit from this site. Blacks Gulch is also a Colorado Natural Area under Colorado Parks and Wildlfe.

*Photo Provided by Colorado Natural Areas Program*

BLM White River Field Office | 220 E. Market Street | Meeker, CO 81641 | Phone: (970) 878-3800 | Fax:  (970) 878-3805 | wrfomail@blm.gov | Office Hours: Monday - Friday 7:45AM to 4:30PM