Anticosti Island, Jupiter River, Gun River Formation (Silurian of Canada)

Where: Québec, Canada (49.5° N, 63.6° W: paleocoordinates 21.1° S, 35.7° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Gun River Formation (Anticosti Group), Alexandrian (443.4 - 436.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: gray, argillaceous lime mudstone and gray, calcareous shale

• Environmental call by T. Hanson.
• Argillaceous, gray-brown lime mudstone with brown, skeletal wackestone to packstone and intrarudstone (conglomerate), interbedded with thin beds of gray calcareous shale to argillaceous lime mudstone, commonly burrowed. Lithology from C. R. Barnes, A. A. Petryk and T. E. Bolton. 1981. Anticosti Island, Québec. Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group Guidebook 1:1-24

Size class: macrofossils

Primary reference: S. L. Duffield and J. A. LeGault. 1981. Acritarch biostratigraphy of Upper Ordovician-Lower Silurian rocks, Anticosti Island, Québec: Preliminary results. In P. J. Lespérance (ed.), Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group, Stratigraphy and Paleontology 2:91-99 [S. Holland/T. Hanson/S. Bruning]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24581: authorized by Steven Holland, entered by Tori Hanson on 11.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Climacograptidae
Climacograptus rectangularis
 Life -
Estiastra magna
Estiastra magna Eisenack 1959 acritarchs
Dinophyceae
  -
Multiplicisphaeridium lobeznum