Mount Cap Formation, Northwest Territories (Cambrian of Canada)

Where: Northwest Territories, Canada (65.0° N, 118.0° W: paleocoordinates 8.8° S, 69.9° W)

• outcrop-level geographic resolution

When: Bonnia - Olenellus zone, Mount Cap Formation, Waucoban (530.0 - 513.0 Ma)

• Was given as Tommotian, Bonnia-Olenellus is Waucoban.

• formation-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, glauconitic, silty, sandy carbonate

• mount cap succession comprises 100-300 meters of carbonate with glauconite sandstones, siltstones, and shales.

Size class: mesofossils

Preservation: replaced with pyrite

Collection methods: core,

Primary reference: N. J. Butterfield. 1994. Burgess Shale-type fossils from a Lower Cambrian shallow-shelf sequence in northwestern Canada. Nature 369(9):477-479 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 6850: authorized by Mark Patzkowsky, entered by Phil Borkow on 31.03.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• The list does not include unnamed branchiopods, trilobites, or lingulids
 Radiodonta - Anomalocarididae
Trilobita indet. Walch 1771 trilobite
Brachiopoda indet. Cuvier 1805
Lingulata indet. Gorjansky and Popov 1985
 Sachitida -
Wiwaxia sp. Mathew 1899
 Reticulosa - Protospongiidae
? Protospongia sp. Salter 1864 glass sponge