Where: Boulder County, Colorado (40.0° N, 105.3° W: paleocoordinates 38.9° N, 62.2° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Muddy Sandstone Formation (Dakota Group), Albian (113.0 - 100.5 Ma)

• Sequence 3, middle to upper part of the Muddy Formation

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithology not reported

Size class: macrofossils

Preservation: cast, trace

Collected by B. A. Clark in 1985; reposited in the DMNH

Collection methods: surface (float), peel or thin section,

• discovered by Betty Ann Clark

Primary reference: M. G. Lockley. 1987. Dinosaur footprints from the Dakota Group of eastern Colorado. The Mountain Geologist 24(4):107-122 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 55197: authorized by Matthew Carrano, entered by Kaitlin Maguire on 28.09.2005

Creative Commons license: CC BY (attribution)