2148 ft, Jackfish River Section, Mackenzie Mountains (Carboniferous of Canada)

Where: Northwest Territories, Canada (61.1° N, 124.0° W: paleocoordinates 11.1° N, 36.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Besa River Formation, Osagean (352.0 - 343.0 Ma)

• This unit is 200 feet thick. The bed label is given as feet from the base of the section to the base of the unit containing this collection. PJW: Given Macrostrat, this is now the Besa River formation.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, gray, argillaceous limestone and lithified, calcareous shale

• "Limestone, argillaceous, medium gray, interbedded with calcareous shales. Beds of limestone and shale of almost equal thickness, non more than 5 feet, and commonly 1-2 feet thick, upper three feet silty."

Size classes: macrofossils, mesofossils

Primary reference: W. J. H. Patton. 1958. Mississippian succession in South Nahanni River area, Northwest Territories. Jurassic and Carboniferous of Western Canada 309-326 [N. Heim/N. Heim/N. Heim]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 62433: authorized by Noel Heim, entered by Noel Heim on 19.07.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Orthotetida - Pulsiidae
? Schellwienella sp.
Rhynchonellata
 Spiriferida - Elythidae
Torynifer sp.
Stenolaemata
 Cryptostomata - Fenestellidae
Fenestrellina sp.
Fenestrellina sp. d'Orbigny 1849
Trilobita
 Proetida - Phillipsiidae
"Proetus loganensis" = Perexigupyge loganensis
"Proetus loganensis" = Perexigupyge loganensis Hall and Whitfield 1868 trilobite