Vittrekwa River - North Branch Formation (upper) (Cretaceous of Canada)

Where: Yukon, Canada (67.1° N, 135.7° W: paleocoordinates 67.7° N, 67.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: North Branch Formation, Berriasian (145.0 - 139.8 Ma)

• Collection from the "North Branch Formation" unit of the Vittrekwa River section. This succession is assigned a Berresian age based on macrofossil biostratigraphy (Buchia okensis biozone of Jeletzky, 1958). Overlies conformably lower Tithonian age North Branch Formation of the Buchia mosquensis biozone.

• bed-level stratigraphic resolution

Environment/lithology: foreshore; lithified, pebbly, conglomeratic sandstone

• Mainly beach to piedmont paleoenvironments.
• Mainly interbedding of sandstone, grit, and pebble conglomerate.

Size class: macrofossils

Reposited in the GSC

Collection methods: quarrying,

• Collection is a composite derived from Fig. 2 of Jeletzky (1978), and amalgamated from occurrences of individual taxa on composite columns for individual lithostratigraphic units. Collections presumably are reposited in the Geological Survey of Canada collections.

Primary reference: J. A. Jeletzky. 1975. Jurassic and Lower Cretaceous paleogeographgy and depositional tectonics of Porcupine Plateau. adjacent areas of Northern Yukon and those of MacKensie District. Geological Survey of Canada, Paper 74(16):1-52 [A. Miller/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 55976: authorized by Austin Hendy, entered by Austin Hendy on 09.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Definately not an exhaustive taxonomic list; taxonomic nomenclature appears reliable.
Bivalvia
 Pectinida - Buchiidae
Buchia okensis Pavlow 1907 scallop