Where: Quebec, Canada (48.5° N, 64.2° W: paleocoordinates 23.1° S, 38.0° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: unit 5 Member (White Head Formation), Hirnantian (445.2 - 443.4 Ma)

• The White Head Formation is divided into 9 numbered units. This collection is from unit 5, with unit 1 being the base of the formation.

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal; lithified, calcareous mudstone and lithified, silty, calcareous shale

Size class: macrofossils

Primary reference: P. M. Sheehan and P.J. Lesperance. 1981. Brachiopods from the White Head Formation (Late Ordovician-Early Silurian) of the Perce region, Quebec, Canada. IUGS Subcommission on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group, Field meeting, Anticosti-Gaspe, Quebec, 1981 2:1-321 [M. Patzkowsky/Z. Krug/Z. Krug]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 12146: authorized by Mark Patzkowsky, entered by Zack Krug on 10.10.2001

Creative Commons license: CC BY (attribution)