White Head Fm, Perce, S-61-4-Patzkowsky (Silurian of Canada)

Also known as Perce

Where: Quebec, Canada (48.5° N, 64.3° W: paleocoordinates 22.6° S, 35.5° 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 a general one for the section in which the Llandovery beds may be found, not for the Llandovery beds specifically.
• Smooth, lithographic, brown to dar-brownish-gray (micritic) limestone beds 1-6 in. thick w/ thinner interbeds of grey, shaly or silty limestone or calcareious shale. Contacts between alternating pure and argillaceious 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.

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 11353: 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
unclassified
  -
Thysanopeltida indet., Blobineossia cf. billingsi
Brachiopoda
  -
Brachiopoda indet.
Brachiopoda indet. Cuvier 1805
Trilobita
 Corynexochida - Illaenidae
Stenopareia spp.
Stenopareia spp. Holm 1886 trilobite
 Phacopida - Phacopidae
Denckmannites primaevus
 Phacopida - Encrinuridae
Encrinurus sp.
Encrinurus sp. Emmrich 1844 trilobite
 Odontopleurida - Odontopleuridae
Acidaspis sp.
Acidaspis sp. Murchison 1839 trilobite