near Brown's Ranch, Elk Mountains (Jurassic to of the United States)

Where: Johnson County, Wyoming (44.0° N, 106.4° W: paleocoordinates 39.6° N, 52.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Morrison Formation, Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Utterback in 1906; reposited in the CM

Primary reference: W. J. Holland. 1906. Section of Paleontology. Annual Report of the Director for the Year Ending March 31, 1906 28-30 [M. Carrano/A. Murch/A. Murch]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 142334: authorized by Matthew Carrano, entered by Matthew Carrano on 09.04.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia - Diplodocidae
Diplodocus sp. Marsh 1878 diplodocine
CM 2098, 2099
 Neornithischia - Dryosauridae
Dryosaurus altus Marsh 1878 bird foot dinosaur
CM 1949