Kukpowruk River (USGS Mes. loc. 22127) (Jurassic to of the United States)

Where: Alaska (68.7° N, 163.2° W: paleocoordinates 79.1° N, 36.8° W)

• small collection-level geographic resolution

When: Tiglukpuk Formation, Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)

• "Stratigraphic position unknown (relative to other Tiglukpuk sections)."

• bed-level stratigraphic resolution

Environment/lithology: offshore; concretionary sandstone and shale

• "[These sediments] were deposited in an eastward-trending trough about 150 mi wide...the trough was bounded on the S by a rising landmass from which most of the sediments were derived [foreland basin?]. IT was bounded on the N by the Barrow Platform..."
• sandstone and shale containing concretions.

Reposited in the USGS

Primary reference: R. W. Imlay. 1955. Characteristic Jurassic Mollusks from northern Alaska. United States Geological Survey Professional Paper 274-D:69-96 [J. Alroy/M. Sommers]more details

PaleoDB collection 5197: authorized by John Alroy, entered by Mike Sommers on 02.09.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Buchiidae
"Aucella rugosa" = Buchia rugosa
"Aucella rugosa" = Buchia rugosa Fischer 1837 scallop