USGS 13729 - Kokolik River, North Slope (Cretaceous of the United States)

Also known as Loc. #14; 26AS61

Where: North Slope County, Alaska (69.2° N, 162.0° W: paleocoordinates 79.7° N, 91.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Kupowruk Formation, Albian (113.0 - 100.5 Ma)

• Middle Albian in age. Probably in Kupowruk Fm rather than upper part of Torok Fm.

• bed-level stratigraphic resolution

Environment/lithology: marine; siltstone and shale

• Siliciclastic marine paleoenvironment
• Siltstone, sandstone and shale.

Size class: macrofossils

Reposited in the USGS

Collection methods: quarrying,

• Collections reposited in USGS and USNM collections. Collected by P.S. Smith, 1926.

Primary reference: R. W. Imlay. 1961. Characteristic lower Cretaceous megafossils from northern Alaska. United States Geological Survey Professional Paper 335 [A. Miller/A. Hendy/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 44365: authorized by Austin Hendy, entered by Austin Hendy on 08.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive.
Bivalvia
 Cardiida - Tancrediidae
Tancredia sp. Lycett 1850 clam
 Cardiida - Arcticidae
? Arctica sp. Schumacher 1817 clam