Alameda Parkway Morrison dinosaur site (Jurassic to of the United States)

Where: Jefferson County, Colorado (39.7° N, 105.2° W: paleocoordinates 35.1° N, 52.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• presumably laterally continuous with Lakes Quarry 5 (now destroyed); bones present in one layer, the second of four stories in the section

• bed-level stratigraphic resolution

Environment/lithology: channel lag; lithified, medium-grained, pebbly sandstone

• "The bone layer is a coset of trough crossbed sets. The lowest sets usually contain pebbles of gray mudstone and granules of crystalline rocks. Paleoflow was southeast...Most of the crossbed sets are medium-grained sandstone, but fluctuations in current velocity are recorded by sets of pebbly coarse sandstone near the middle of the bone layer."

Size class: macrofossils

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

Primary reference: J. F. Hubert and P. T. Panish. 2000. Sedimentology and diagenesis of the dinosaur bones exposed at Dinosaur Ridge along Alameda Parkway in the Morrison Formation (Upper Jurassic), Morrison, Colorado. The Mountain Geologist 37(2):73-90 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 66909: authorized by Matthew Carrano, entered by Matthew Carrano on 23.10.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

 Dinosauria -
 Saurischia - Camarasauridae
Camarasaurus sp. Cope 1877 camarasaurid
 Theropoda -