USGS 22500 - Iligluruk Creek, North Slope (Cretaceous of the United States)

Also known as Loc. #21; 50AMg69

Where: North Slope County, Alaska (68.5° N, 161.7° W: paleocoordinates 76.4° N, 35.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Okpikruak Formation, Valanginian (139.8 - 132.9 Ma)

• Valanginian in age. Lower part of the Okpikruak Formation.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified wackestone

• Shallow water, possibly littoral zone.
• Graywacke

Size class: macrofossils

Reposited in the USGS

Collection methods: quarrying,

• Collections reposited in USGS and USNM collections. Collected by M.D. Magnus, 1950.

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 44359: authorized by Austin Hendy, entered by Austin Hendy on 08.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive.
Show authors, comments, and common names
Bivalvia
 Pectinida - Buchiidae
"Aucella sublaevis" = Buchia
"Aucella sublaevis" = Buchia scallop