Anticosti Island, Salmon River (9-Mile Pool), Basal Becscie Formation (Silurian of Canada)

Where: Québec, Canada (49.4° N, 62.3° W: paleocoordinates 21.3° S, 34.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Oulodus? nathani zone, Becscie Formation (Anticosti Group), Alexandrian (443.4 - 436.0 Ma)

• Basal Becscie or Bolton's Member 6, Ellis Bay Formation

• member-level stratigraphic resolution

Environment/lithology: limestone and shale

• Environmental call by T. Hanson.
• "Thin- to medium-bedded limestone with interbedded shale. The limestones are variable and include: a) grey, lime mudstone to skeletal wackestone, commonly burrowed and locally rippled, laminated, cross laminated, or rarely slumped and b) skeletal to intraclastic packstone and grainstone."

Size class: macrofossils

Collection methods: Brachiopods, bryozoans, trilobites, and gastropods also found in collection.

Primary reference: C. R. Barnes, A. A. Petryk, and T. E. Bolton. 1981. Anticosti Island, Québec. In P. J. Lespérance (ed.), Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group Guidebook 1:1-24 [S. Holland/T. Hanson/S. Bruning]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24447: authorized by Steven Holland, entered by Tori Hanson on 07.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Pterobranchia
 Graptoloidea - Normalograptidae
"Climacograptus normalis" = Normalograptus normalis
"Climacograptus normalis" = Normalograptus normalis Lapworth 1877 graptolite
Crinoidea
 Monobathrida - Glyptocrinidae
? Glyptocrinus sp. Hall 1847 Sea lily
 Calceocrinida - Calceocrinidae
Calceocrinus sp. Hall 1852 Sea lily
Lingulata
 Lingulida - Trematidae
Trematis sp. Sharpe 1848
Strophomenata
 Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
Rhynchonellata
 Pentamerida - Parastrophinidae
Trilobita
 Lichida - Lichidae
Lichas sp. Dalman 1827 trilobite
 Odontopleurida - Odontopleuridae
Primaspis sp. Richter and Richter 1917 trilobite