Driftwood creek (USGS Mes. loc. 22776) (Jurassic to of the United States)

Where: Alaska (68.7° N, 160.4° W: paleocoordinates 77.9° N, 42.5° W)

• small collection-level geographic resolution

When: Tiglukpuk Formation, Late/Upper Oxfordian to Late/Upper Oxfordian (161.2 - 150.8 Ma)

• Possibly near base of Kinglak Shale.

• bed-level stratigraphic resolution

Environment/lithology: delta front; lithified, conglomeratic, cherty/siliceous conglomerate 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..."
• conglomerate, conglomeratic shale, and chert. fossils from concretions in shale.

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

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5200: authorized by John Alroy, entered by Mike Sommers on 02.09.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Pectinida - Buchiidae
"? Aucella rugosa" = Buchia rugosa, "Aucella mosquensis" = Buchia piochii
"? Aucella rugosa" = Buchia rugosa Fischer 1837 scallop
"Aucella mosquensis" = Buchia piochii Gabb 1864 scallop