ammonites
Carnegie Quarry D, Sheep Creek (Jurassic to of the United States)

Where: Albany County, Wyoming (42.2° N, 105.9° W: paleocoordinates 37.7° N, 52.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Morrison Formation, Kimmeridgian to Kimmeridgian (155.7 - 145.5 Ma)

• 30-40 ft above Quarry E

• bed-level stratigraphic resolution

Environment/lithology: pond; gray, argillaceous marl and limestone

• ponds and swamps in deltas or floodplains
• limestone-marl with silt and clay, gray

Size class: macrofossils

Collected by J. L. Wortman, A. Peterson, & C. W. Gilmore in 1899-1902

Collection methods: quarrying, mechanical,

• Collection includes materials from four successive years: J. L. Wortman 1899, A. Peterson 1900, and C. W. Gilmore 1901-2.

Primary reference: J. B. Hatcher. 1900. The Carnegie Museum Paleontological Expeditions of 1900. Science 12(306):718-720 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13352: authorized by Matt Carrano, entered by Matt Carrano on 01.03.2002

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)