Dartonaspis wichitaensis Subzone assemblage (Cambrian of Canada)

Where: Alberta, Canada (51.5° N, 116.2° W: paleocoordinates 2.8° S, 75.6° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Bison Creek Formation, Sunwaptan (493.5 - 487.5 Ma)

• approximately 125m above the base of the Bison Creek Formation

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, calcareous shale and lithified, intraclastic, shelly/skeletal grainstone

• at type section Bison Creek consists of 177m of calcareous shales and mudstones, calcarenites, intrarudites, and algal buildups

Size class: macrofossils

Primary reference: S. R. Westrop. 1986. Trilobites of the Upper Cambrian Sunwaptan Stage, southern Canadian Rocky Mountains, Alberta. Palaeontographica Canadiana 3:1-179 [S. Peters/S. Peters/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 54092: authorized by Shanan Peters, entered by Shanan Peters on 22.09.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Olenida - Parabolinoididae
? Minkella sp.
? Minkella sp. Lochmann and Hu 1959 trilobite
  - Ellipsocephaloididae
Ellipsocephaloides silvestris, Ellipsocephaloides monsensis
 Ptychopariida - Kingstoniidae
Pugionicauda paradoxa
 Ptychopariida - Elviniidae
Dartonaspis wichitaensis
 Asaphida - Ptychaspididae
? Ptychaspis sp., Idiomesus greggi
? Ptychaspis sp. Hall 1863 trilobite
Idiomesus greggi trilobite
 Asaphida - Dikelocephalidae
? Prosaukia misa
? Prosaukia misa Owen 1852 trilobite