White Head Fm, Perce, Ashgill, 62F6-Patzkowsky (Ordovician of Canada)

Where: Quebec, Canada (48.8° N, 64.5° W: paleocoordinates 23.6° S, 39.3° W)

• coordinate based on political unit

• outcrop-level geographic resolution

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

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, sandy, calcareous limestone and lithified conglomerate

• Basal quartz conglomerate followed by fossiliferous sandy calcarenite with scattered quartz pebbles.

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 11555: authorized by Mark Patzkowsky, entered by Zack Krug on 21.08.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Strophomenata
 Strophomenida - Sowerbyellidae
Sowerbyella ? gigantea Schuchert and Cooper 1930
 Orthotetida - Triplesiidae
Oxoplecia sp. Wilson 1913
Rhynchonellata
 Orthida - Dalmanellidae
Dalmanella "sp. A" Hall and Clarke 1892
 Orthida - Plectorthidae
Plectorthis cf. magna Cooper and Kindle 1936
 Atrypida - Cyclospiridae
? Cyclospira sp. Hall and Clarke 1893