White Head Fm, Perce, Ashgill, 62F25 - 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

• 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 1 being the base of the formation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, silty shale

• Little more than 50% silty shale, with very common interbeds of micrite, silty to sandy limestone, calcarenite 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 11735: authorized by Mark Patzkowsky, entered by Zack Krug on 04.09.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• Brachiopods only.
Show authors, comments, and common names
unclassified
  -
Dalmanellacidae indet., Plectombonitacidae indet.
Strophomenata
 Orthotetida - Chilidiopsidae
Fardenia costatula
Fardenia costatula Cooper and Kindle 1936
 Strophomenida - Leptostrophiidae
Brachyprion sp.
Brachyprion sp. Shaler 1865
listed in quotation marks..."Brachyprion"
 Strophomenida - Rafinesquinidae
Leptaena spp.
Leptaena spp. Dalman 1828
Rhynchonellata
 Atrypida - Atrypinidae
Spirigerina sp.
Spirigerina sp. d'Orbigny 1849
listed as Spirigerina (Eospirigerina) sp.
 Rhynchonellida -
Rhynchonellida indet.