Loc. 3, Sekwi Brook North, Sheepbed Fm., Canada - Narbonne and Aitken 1990 (Ediacaran to of Canada)

Where: Northwest Territories, Canada (64.7° N, 132.0° W: paleocoordinates 32.6° S, 76.0° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Sheepbed Formation, Wonokan to Wonokan (580.0 - 580.0 Ma)

• The terminal Windermer Formations make up four, kilometer-scale, shallowing-upward, carbonate capped Grand Cycles. The Gametrail, Sheepbed, Blueflower, and Risky Formations art thought to be equivalent to the the Redkino "Series" of Vendian Age on the Russian Platform.

• formation-level stratigraphic resolution

Environment/lithology: submarine fan; lithified siltstone and sandstone

• laminated to finely laminated dolomitic siltstone and very fine-grained sandstone, with partings and packets of gray to brown, silty shale and mudstone. Undescribed, rare sole marks are also present.

Preservation: trace

Collection methods: Float that could not be tied down definitely stratigraphically was not included in the study material. Ediacaran body fossils occur predominantly as raised features on the bottom of beds and very rarely as depressed features on soles. The Sekwi Brook fauna represent the first Ediacaran assemblage on a slope setting/

Primary reference: G. Narboone and J. Aitken. 1990. Ediacaran fossils from the Sekwi Brock Area, Mackenzie Mountains, Northwestern Canada. Palaeontology 33(4):945-980 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 10346: authorized by Mark Patzkowsky, entered by Phil Borkow on 10.04.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• It appears that the listed faunas from the Mackenzie Mountains can be correlated with those of the Wernecke Mountains creating a single "Windermere fauna"
 Arboreomorpha -
Medusinites asteroides
  -
Aspidella terranovica
  -
"Cyclomedusa plana" = Aspidella terranovica
"Cyclomedusa plana" = Aspidella terranovica Billings 1872
Aspidella
  -
"Cyclomedusa sp." = Aspidella
"Cyclomedusa sp." = Aspidella Billings 1872
Kullingia
  -
? Kullingia sp. Glaessner 1974
 Ichnofossils -
Planolites montanus Richter 1937
trace fossil