Rugosa of Twins Falls Fmn, Upper Member (lower beds), Kakisa Lake/Hay River area (Devonian of Canada)

Where: Northwest Territories, Canada (61.0° N, 117.0° W: paleocoordinates 6.2° S, 37.2° W)

• coordinate estimated from map

• basin-level geographic resolution

When: upper Member (Twin Falls Formation), Frasnian (382.7 - 372.2 Ma)

• upper (unnamed) member, lower beds

• member-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, argillaceous limestone and shelly/skeletal, silty limestone

• "The upper, unnamed a generally well bedded sequence of argillaceous and silty bioclastic limestones and bears a rich rugose coral fauna at a number of levels.

Primary reference: R. A. McLean and J. E. Sorauf. 1988. The distribution of rugose corals in Frasnian outcrop sequences of North America. In N. J. McMillan, A. F. Embry, and D. J. Glass (eds.), Devonian of the World, Volume III. Canadian Society of Petroleum Geologists. Calgary, Alberta, Canada 379-396 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 40137: authorized by Michael Foote, entered by Michael Foote on 18.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Rugosa only
 Rugosa - Chonophyllidae
Fedorowskicyathus sp. Rozkowska 1980 horn coral
 Stauriida - Kyphophyllidae
 Stauriida - Disphyllidae
Hexagonaria firthi horn coral
Hunanophrentis sp. Sun 1958 horn coral
Temnophyllum sp. Walther 1928 horn coral
 Stauriida - Phillipsastreidae
Macgeea proteus horn coral
 Rugosa -
Piceaphyllum sp. horn coral