CH 11, Cow Head Peninsula [Shallow Bay Fm] (Cambrian of Canada)

Where: Newfoundland and Labrador, Canada (49.9° N, 57.8° W: paleocoordinates 35.6° S, 59.9° W)

When: Crepicephalus trilobite zone, Downes Point (lower) Member (Shallow Bay Formation), Dresbachian (497.0 - 485.4 Ma)

• Kindle Zone 5 (preliminary, agnostoid-based evaluation by co-author) JA: correlates with Utah zones (see Fig. 6) that are entirely Middle Cambrian according to Gradstein et al. 2004. AGE: Dresbachian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data (= Crepicephalus zone).

Environment/lithology: offshore shelf; lithified, shelly/skeletal packstone and lithified grainstone

• member: coarse grained sequence of often amalgamated carbonate conglomerates. Specimens: equant casts of light-colored, bioclastic packstones and grainstones.

Size class: macrofossils

Collection methods: Specimens from boulders

Primary reference: S. R. Westrop, R. Ludvigsen, and C. H. Kindle. 1996. Marjuman (Cambrian) agnostoid trilobites of the Cow Head Group, western Newfoundland. Journal of Paleontology 70(5):804-829 [M. Patzkowsky/P. Borkow/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9697: authorized by Mark Patzkowsky, entered by Phil Borkow on 11.01.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• Only includes trilobites and no other macrofossils from the Cow Head Group.
Show authors, comments, and common names
Artiopoda
 Agnostida - Agnostidae
Kormagnostus boltoni
Kormagnostus boltoni Westrop et al. 1996
 Agnostida - Diplagnostidae
Pseudagnostina douvillei, Nahannagnostus logani