WRI 641, Shallow Bay Formation, Newfoundland - Westrop et. al 1996 (Cambrian of Canada)

Where: Newfoundland and Labrador, Canada (49.0° N, 55.5° W)

• Paleocoordinates: 52.3° S, 116.6° W (Wright 2013)

• coordinate based on political unit

When: P. gibbus - P. punctuosus zone, Downes Point (lower) Member (Shallow Bay Formation), Middle Cambrian (509.0 - 497.0 Ma)

• Kindle ZOne 3 (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

• member-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, carbonaceous conglomerate

• coarse grained sequence of often amalgamated carbonate conglomerates.

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 9682: authorized by Mark Patzkowsky, entered by Phil Borkow on 11.01.2001

Creative Commons license: CC0 (CC0)

Taxonomic list

• Only includes trilobites and no other macrofossils from the Cow Head Group.
Show authors, comments, and common names
Artiopoda
 Agnostida - Ptychagnostidae
Ptychagnostus atavus
Ptychagnostus atavus
[entered as Ptychagnosts atavus]