Red Fork Powder River Quarry B (Jurassic to of the United States)

Where: Johnson County, Wyoming (43.6° N, 106.8° W: paleocoordinates 39.3° N, 52.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by W. Utterback in 1903; reposited in the CM

Collection methods: quarrying, mechanical,

• Collected by W. H. Utterback, 1903

Primary reference: W. J. Holland. 1905. The osteology of Diplodocus Marsh. With special reference to the restoration of the skeleton of Diplodocus carnegiei Hatcher, presented by Mr. Andrew Carnegie to the British Museum, May 12, 1905. Memoirs of the Carnegie Museum 2(6):225-264 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 58509: authorized by Matthew Carrano, entered by Matthew Carrano on 10.02.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia -
? Haplocanthosaurus sp.2 Hatcher 1903 sauropod
CM 36034
 Saurischia - Diplodocidae
Diplodocus sp.2 Marsh 1878 diplodocine
CM 307
Apatosaurus sp.1 Marsh 1877 diplodocid
 Saurischia - Camarasauridae
Camarasaurus sp.2 Cope 1877 camarasaurid
CM 312, 1253, 1256, 21775, 28846–7, 36019–25, 36027–32, 36036, 36039–40, 36042–3, 36670,
 Avetheropoda - Allosauridae
Allosaurus sp.1 Marsh 1877 allosaurid
CM 36037, caudal