District of Mackenzie, Prongs Creek Section, Unit 7 Road River Formation (Silurian of Canada)

Where: Northwest Territories, Canada (65.3° N, 135.7° W: paleocoordinates 9.0° N, 47.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Road River Formation, Ludlow (427.4 - 423.0 Ma)

• Collection from 278-280 feet above the base of the bed.

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal; shale and argillaceous, cherty/siliceous limestone

• "Shale and limy argillite, recessive, minor argillaceous limestone and rare chert bedded and as nodules within limestone."

Size class: macrofossils

Collection methods: Monograptus nilssoni fauna.

Primary reference: B. S. Norford. 1963. Reconnaissance of the Ordovician and Silurian rocks of Northern Yukon Territory. Geological Survey of Canada Department of Mines and Technical Surveys, Paper 63(39):1-139 [S. Holland/T. Hanson/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 25497: authorized by Steven Holland, entered by Tori Hanson on 13.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Monograptidae
"Monograptus bohemicus" = Bohemograptus bohemicus, Monograptus sp.
"Monograptus bohemicus" = Bohemograptus bohemicus Barrande 1850 graptolite
Monograptus sp. graptolite