Also known as Field No. 20, Bed 18
Where: Northwest Territories, Canada (68.1° N, 135.6° W)
• Paleocoordinates: 76.7° N, 51.1° W (Wright 2013)
• coordinate stated in text
• outcrop-level geographic resolution
When: Rat River Formation, Aptian (125.0 - 113.0 Ma)
• 30 ft thick sandstone, 191.5-207 ft from base of section; classified as "upper sandstone division" in Jeletzky (1958); Jeletzky (1958) and Fowler and Braun (1993) assign this unit an Aptian age.
• bed-level stratigraphic resolution
Environment/lithology: marine; poorly lithified, fine-grained, black, brown sandstone
Size class: macrofossils
Reposited in the GSC
Collection methods: quarrying,
• Collected by Jeletzky; presumably reposited in GSC collections .
Primary reference: J. A. Jeletzky. 1958. Uppermost Jurassic and Cretaceous rocks of Aklavik Range, Northeastern Richardson Mountains, Northwest Territories. Geological Survey of Canada, Paper 58(2):1-84 [A. Miller/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 55864: authorized by Austin Hendy, entered by Austin Hendy on 06.11.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
? Nucula sp. Lamarck 1799 nut clam | |
| |
? Arctica sp. Schumacher 1817 clam | |
? Tancredia sp. Lycett 1850 clam | |
Aucellina aptiensis scallop | |
"Pecten (Entolium) sp." = Entolium
"Pecten (Entolium) sp." = Entolium Meek 1865 scallop |