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: 3 Member (Gun River Formation), Alexandrian (443.4 - 436.0 Ma)

• member-level stratigraphic resolution

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

Size classes: macrofossils, mesofossils

Collection methods: Graptolites only. From Petryk's 1975, 1976, 1977, and 1979 collections. Collections 75MP18-L6C-1F and 77AP35-12-2F.

Primary reference: J. Riva and A. A. Petryk. 1981. Graptolites from the Upper Ordovician and Lower Silurian of Anticosti Island and the position of the Ordovician-Silurian boundary. Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group, Stratigraphy and Paleontology 2:159-164 [S. Holland/T. Hanson/S. Holland]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24769: authorized by Steven Holland, entered by Tori Hanson on 19.08.2002

Creative Commons license: CC BY (attribution)