Perce - Patzkowsky (Ordovician of Canada)

Also known as White Head Fm, Perce, Quebec, upper Ashgill - Patzkowsky

Where: Quebec, Canada (48.5° N, 64.3° W: paleocoordinates 24.0° S, 39.3° W)

• coordinate based on nearby landmark

When: Cote de la Surprise Member (White Head Formation), Gamachian (449.5 - 443.7 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore; lithified, green siltstone

• very limy greenish siltstone.

Size class: macrofossils

Primary reference: P. J. Lespérance. 1968. Ordovician and Silurian trilobite faunas of the White Head Formation, Percé Region, Québec. Journal of Paleontology 42(3):811-826 [M. Patzkowsky/Z. Krug/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 13132: authorized by Mark Patzkowsky, entered by Zack Krug on 22.01.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Paper focuses on trilobites only, but occassionally includes a few other taxa which are included here.
Show authors, comments, and common names
Trilobita
 Trinucleida - Trinucleidae
Cryptolithus sp.
Cryptolithus sp. Green 1832 trilobite
 Phacopida - Homalonotidae
Brongniartella platynotus n. sp., "Portaginus robustus" = Brongniartella robusta
Brongniartella platynotus n. sp. trilobite
"Portaginus robustus" = Brongniartella robusta Lespérance 1968 trilobite
 Phacopida - Dalmanitidae
"Dalmanitina mucronata" = Mucronaspis (Songxites) mucronatus
"Dalmanitina mucronata" = Mucronaspis (Songxites) mucronatus Brongniart 1822 trilobite
Pterobranchia
 Graptoloidea - Normalograptidae
"Climacograptus cf. rectangularis" = Normalograptus rectangularis
"Climacograptus cf. rectangularis" = Normalograptus rectangularis McCoy 1874 graptolite
or C. medius
 Graptoloidea - Diplograptidae
? Diplograptus sp.
 Graptoloidea - Climacograptidae
Climacograptus sp.
Climacograptus sp. Hall 1865 climacograptid