Cape Phillips Fmn. in Twilight Creek Section (Silurian of Canada)

Where: Nunavut, Canada (73.4° N, 99.1° W: paleocoordinates 0.6° N, 32.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cape Phillips Formation, Pridoli (423.0 - 419.2 Ma)

• formation-level stratigraphic resolution

Environment/lithology: basinal (); shale

• "Throughout much if not all of the Archipelago, the boundary between the Silurian and Devonian Systems, as presently defined, is transitional and not represented by a hiatus. Moreover, the S-D boundary is represented in contrasting facies: graptolitic, shelly, redbeds, and flysch deposits. The graptolitic rocks occur in outer parts of the Franklinian Geosyncline, and are exposed on Melville, Bathurst, Cornwallis, Baillie Hamilton, Devon and Ellesmere Islands. The shelly facies occurs in inner parts of the F.G. and on the adjoining Arctic Platform, and is exposed on Victoria, Stefansson, Cornwallis, Devon and Ellesmere Islands. The redbeds crop out in the environs of a prominent cratonic uplift (Boothia Uplift) on Cornwallis and Prince of Wales Islands. Outcrops of the flysch deposits are confined to northern Ellesmere Island."

•SEP environmental call based on section in reference

• [Lithology based on illustrated section.]

Size class: macrofossils

Collection methods: I have combined collecting levels 231.5, 296, 457.5, and 460.5 m above base of section.

Primary reference: J. W. Kerr, D. J. McLaren, and R. Thorsteinsson. 1977. Canadian Arctic Archipelago. In A. Martinsson (ed.), The Silurian-Devonian boundary (IUGS, Series A, Number 5) 281-288 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 14022: authorized by Michael Foote, entered by Michael Foote on 08.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Retiolitidae
Plectograptus macilentus
 Graptoloidea - Monograptidae
"Monograptus bohemicus" = Bohemograptus bohemicus, Monograptus spp., Monograptus cf. crinitus, Monograptus nilssoni, Monograptus cf. transgrediens, Monograptus cf. uniformis
"Monograptus bohemicus" = Bohemograptus bohemicus Barrande 1850 graptolite
Monograptus spp. graptolite
Monograptus cf. transgrediens Pemer 1899 graptolite
Monograptus cf. uniformis Pribyl 1940 graptolite