2410 ft, Jackfish River Section, Mackenzie Mountains (Carboniferous of Canada)

Where: Northwest Territories, Canada (61.1° N, 124.0° W: paleocoordinates 15.5° N, 34.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Meramecian (343.0 - 335.5 Ma)

• This unit is 225 feet thick.

•

•The bed label is given as feet from the base of the section to the base of the unit containing this collection.

• group of beds-level stratigraphic resolution

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

• "Limestone, medium to dark gray, variable argillaceous cntent, beds 1-2 feet thick, black irregular chert bands and nodules 6-8 inches thick within the limestones. Interbeds of calcareous dark gray shales, average thickness equal to that of the limestone."

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 62434: 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
Blastoidea
 Spiraculata - Pentremitidae
Pentremites sp.
Pentremites sp. Say 1820 blastoid
Stenolaemata
 Cryptostomata - Acanthocladiidae
Polypora sp.
 Cryptostomata - Fenestellidae
Fenestrellina sp.
Fenestrellina sp. d'Orbigny 1849
 Rhabdomesida - Rhomboporidae
Rhombopora sp.
Rhombopora sp. Meek 1872
Rhynchonellata
 Athyridida - Athyrididae
Composita cf. immatura
 Spiriferida - Spinocyrtiidae
Platyrachella rutherfordi
 Spiriferida - Spiriferellidae
Spiriferella minnewankensis
 Spiriferida - Spiriferidae
Spirifer sp., Spirifer bifurcatus, "Brachythyris cf. suborbicularis" = Spirifer suborbicularis
Spirifer sp. Sowerby 1818
"Brachythyris cf. suborbicularis" = Spirifer suborbicularis Hall 1858
Anthozoa
 Stauriida - Hapsiphyllidae
"Triplophyllites sp." = Amplexizaphrentis
"Triplophyllites sp." = Amplexizaphrentis Vaughan 1906 horn coral