Also known as Purgatory River, Picketwire

Where: Otero County, Colorado (37.5° N, 103.7° W: paleocoordinates 32.8° N, 51.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: coastal; argillaceous lime mudstone

Size class: macrofossils

Preservation: mold/impression, trace

Collected by Bird, Lockley in 1935, 1938, 1983–1985

• site discovered by Ridennoure and R. Owens

Primary reference: J. S. MacClary. 1938. Dinosaur trails of Purgatory. Scientific American 158(1):72 [M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 52917: authorized by Matthew Carrano, entered by Kaitlin Maguire on 26.08.2005, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)