District of Mackenzie, Lower Porcupine River Section Unit 7 (Permian of Canada)

Where: Yukon, Canada (67.6° N, 138.2° W: paleocoordinates 42.3° N, 21.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Permian (298.9 - 251.9 Ma)

• formation-level stratigraphic resolution

Environment/lithology: shallow subtidal; gray, red, cherty/siliceous conglomerate and gray, cherty/siliceous sandstone

• "Chert-pebble conglomerate, weathers light yellowish orange, greyish orange, and light yellow-brown, resistant, bedding 1 foot to 5 feet, with 20 to 60%, fine to very coarse, rounded chert pebbles, grey, dark grey, light grey, grey-black, greyish orange, and off-white, weather brown and grey-black, in a siliceous sandstone matrix. Sandstone, siliceous, fine to very coarse, light grey and grey, mostly speckled, weathers light yellowish orange, light brown-grey, greyish orange, dark yellow-orange, and light grey, reistant, bedding 3 inches to 20 feet, mostly 1 foot to 8 feet, with some lanimation and rare crosslamination, of angular to subround, mostly subangular, chert fragments and rare quartz sand; layers of chert pebbles within sandstone beds are common; minor green-gray shaly siltstone, weathers brown, near base of unit."

Size class: macrofossils

Collection methods: Divided into two separate collections within reference. Fauna identified by E.W. Bamber. Collection includes pelecypod, productid brachiopod, and rhynchonellid brachiopods.

Primary reference: B. S. Norford. 1963. Reconnaissance of the Ordovician and Silurian rocks of Northern Yukon Territory. Geological Survey of Canada Department of Mines and Technical Surveys, Paper 63(39):1-139 [S. Holland/T. Hanson/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 25741: authorized by Steven Holland, entered by Tori Hanson on 24.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Spiriferida - Spiriferellidae
Spiriferella cf. saranae
Spiriferella cf. saranae de Verneuil 1845
Strophomenata
 Productida - Productidae
"Muirwoodia sp." = Yakovlevia
"Muirwoodia sp." = Yakovlevia Fredericks 1925
 Productida - Echinoconchidae
Waagenoconcha sp.
 Productida - Linoproductidae
? Linoproductus sp.
Anthozoa
 Stauriida - Bothrophyllidae
cf. Bothrophyllum sp.
cf. Bothrophyllum sp. Trautschold 1879 horn coral
 Ichnofossils -
? Spirophyton sp.
? Spirophyton sp. Hall 1863
"Spirophyton" (?) sp.