5100 ft, Jackfish River Section, Mackenzie Mountains (Carboniferous of Canada)

Where: Northwest Territories, Canada (61.1° N, 124.0° W: paleocoordinates 19.1° N, 31.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Mattson Formation, Chesterian (335.5 - 323.2 Ma)

• This unit is 1430 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 should be the Mattson formation.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified, fine-grained, medium, gray, white sandstone and lithified shale

• "Sandstone, white to yellowish gray, weathering yellowish gray; fine to medium grained, in part quartzitic; ripple marks and cross bedding common. Intervals of 200-300 feet of clean yellowish light gray cliff-forming sandstones are common. The massive sandstones are separated by thin-bedded sandstones and shaly intervals whic are recessive, weathering into gullies, wher rock is poorly exposed. Sparingly fossiiferous."

Size classes: macrofossils, mesofossils

Preservation: cast

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 62440: 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
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
crinoid stems [originally entered as "Crinoidea sp."]
Lingulata
 Lingulida - Discinidae
"Orbiculoides sp." = Orbiculoidea
"Orbiculoides sp." = Orbiculoidea d'Orbigny 1847
Rhynchonellata
 Athyridida - Retziidae
Eumetria cf. vera
 Athyridida - Athyrididae
Composita sp.
Composita sp. Brown 1849
Strophomenata
 Productida - Productidae
Dictyoclostus sp., Dictyoclostus cf. inflatus
Dictyoclostus sp. Muir-Wood 1930
 Lepidodendrales - Lepidodendraceae
Lepidodendron sp.
Lepidodendron sp. Sternberg 1820