Description
Trends SE to Fossil Creek, 55 km (34 mi.) NE of Livengood, Yukon-Tanana Highlands. 4 miles long.
History
So named "because the ravine has many fossils of the mollusklike shellfish (brachipod) that became nearly extinct toward the end of the Permian geologic period 200 million years ago." The name appears on recent U.S. Geological Survey (USGS) maps.