White Head Fm, Perce, S-61-10-Patzkowsky (Silurian of Canada)

Also known as Perce

Where: Quebec, Canada (48.6° N, 64.4° W: paleocoordinates 22.5° S, 35.6° W)

• outcrop-level geographic resolution

When: White Head Formation, Llandovery (443.4 - 433.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, gray limestone and lithified, argillaceous, silty limestone

• Lithologic description is for section in which the Llandovery beds may lie, not for the Llandovery beds themselves.
• Smooth, lithographic to sublithographic, brown to dark-brownish-gray (micritic) limestone beds 1-6 in. thick with thinner interbeds of gray, shaly or silty limestone or calcareous shale. Contacts between alternating pure and argillaceous limestone beds are sharply defined. Locally, beds as much as 8 in. thick consist of coarse, massive crinoidal limestone. Also local beds of conglomerate with a pink, crinoidal matrix. This collectoin was taken from blocks, not from the actual outcrop.

Size class: macrofossils

Primary reference: W. G. Ayrton, W.B.N. Berry, A.J. Boucot, J. Lajoie, P.J. Lesperance, L. Pavlides, and W.B. Skidmore. 1969. Lower Llandovery of the Northern Appalachians and Adjacent Regions. Geological Society of America Bulletin 80:459-484 [M. Patzkowsky/Z. Krug]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 11385: authorized by Mark Patzkowsky, entered by Zack Krug on 13.08.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Phacopida - Phacopidae
Denckmannites primaevus
 Phacopida - Calymenidae
Diacalymene sp.
Diacalymene sp. Kegel 1927 trilobite
 Proetida - Proetidae
Unguliproetus sp a., Unguliproetus sp b.
Unguliproetus sp a. Erben 1951 trilobite
Unguliproetus sp b. Erben 1951 trilobite
Brachiopoda
  -
Brachiopoda indet.
Brachiopoda indet. Cuvier 1805