Find Your Park logo
Read about the Newest National Natural Landmark
NNL 50th Anniversary

For the more information about the air resources of the National Park Service, please visit

Greenwood Canyon

Greenwood Canyon
Greenwood Canyon

Greenwood Canyon, located along a tributary of the Braden Branch, is a rich source of early Cretaceous mammalian fossils. The site has produced specimans of several new taxa.

Location: Montague County, TX

Year designated: 1975

Acres: 220

Ownership: Private

← Back to NNL listing for TX.

← Back to listing of all states and territories.

Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.

Last Updated: June 28, 2012