USGS-M6303 (Buchia Ridge) (Cretaceous of the United States)

Where: Alaska (59.3° N, 159.8° W)

• Paleocoordinates: 73.6° N, 78.7° W (Wright 2013)

When: Buchia Ridge Formation, Valanginian (137.1 - 132.6 Ma)

Environment/lithology: sandstone and conglomerate

• lithology described as thick-bedded greywacke with interbeds of conglomerate and siltstone

Reposited in the USGS

Primary reference: J. M. Hoare and W. L. Coonrad. 1983. Graywacke of Buchia Ridge and Correlative Lower Cretaceous Rocks in the Goodnews Bay and Bethel Quadrangles, Southwestern Alaska. United States Geological Survey Bulletin (1529-C)1-17 [M. Patzkowsky/K. Layou/R. McClees-Funinan]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2389: authorized by Mark Patzkowsky, entered by Karen Layou on 02.07.1999

Creative Commons license: CC0 (CC0)

Taxonomic list

Bivalvia
 Pectinida - Buchiidae