White Head Fm, Perce, Ashgill, 69F14-1E - Patzkowsky (Ordovician of Canada)

Where: Quebec, Canada (48.5° N, 64.2° W: paleocoordinates 24.0° S, 39.2° W)

• coordinate based on political unit

• local area-level geographic resolution

When: White Head Formation, Ashgill (449.5 - 443.7 Ma)

• White Head Fm is divided into 9 numbered units. This collection is from unit 3, with unit one being at the base of the formation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale

• Little more than 50% silth shale, with very common interbeds of micrite, silty to sandy limestone, calcarenitic limestone and calcarenite

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 11930: authorized by Mark Patzkowsky, entered by Zack Krug on 19.09.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• Brachiopods only.
Show authors, comments, and common names
unclassified
  -
? dicoelosid indet., "dalmanellacids" indet., Christiana sp.
Rhynchonellata
 Atrypida - Atrypinidae
Spirigerina sp.
Spirigerina sp. d'Orbigny 1849
Listed as "Spirigerina (Eospirigerina) sp."