Locality: 1/10 to 3/4 mile wide on both sides of the San Miguel River for 4 miles upstream and 4 miles downstream from the town of Placerville, San Miguel County, Colorado.

Horizon: Cutler Formation.

Biostratigraphy:

Age: Wolfcampian, Lower Rotliegendes Epoch, Early Permian.

Material:

MCZ 2983: Vertebra.