Also known as Colorado National Monument, COLM

Where: Mesa County, Colorado (39.1° N, 108.7° W: paleocoordinates 34.4° N, 54.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Salt Wash Member (Morrison Formation), Kimmeridgian (157.3 - 152.1 Ma)

• 2 layers, 10 cm apart in lower part of member. Has also been mapped as Tidwell Mbr.

• group of beds-level stratigraphic resolution

Environment/lithology: "channel"; sandstone and mudstone

Size class: macrofossils

Preservation: cast, trace

Collected by M. Sokolosky in 2005

Collection methods: surface (in situ),

Primary reference: M. G. Lockley and J. R. Foster. 2006. Dinosaur and turtle tracks from the Morrison Formation (Upper Jurassic) of Colorado National Monument, with observations on the taxonomy of vertebrate swim tracks. In J. R. Foster & S. G. Lucas (ed.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:193-198 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 123526: authorized by Matthew Carrano, entered by Matthew Carrano on 25.01.2012

Creative Commons license: CC BY (attribution)