Rugosa of Twins Falls Fmn, Upper Member (upper 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, upper beds

• member-level stratigraphic resolution

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

• "The upper, unnamed member...is 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 40138: authorized by Michael Foote, entered by Michael Foote on 18.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Rugosa only
Anthozoa
 Stauriida - Kyphophyllidae
Smithiphyllum imbulliferum McLean and Pedder 1987 horn coral
Smithiphyllum cygnus McLean and Pedder 1987 horn coral
Tabulophyllum sp. Fenton and Fenton 1924 horn coral
 Stauriida - Disphyllidae
Charactophyllum sp. Simpson 1900 horn coral
 Stauriida - Phillipsastreidae
Phacellophyllum colemanense, Phillipsastrea sp., Peneckiella sp., "Medusaephyllum woodmani" = Pachyphyllum, "Medusaephyllum nevadense" = Pachyphyllum, "Medusaephyllum sp." = Pachyphyllum
Phillipsastrea sp. d'Orbigny 1849 horn coral
Peneckiella sp. Soshkina 1939 horn coral
"Medusaephyllum woodmani" = Pachyphyllum horn coral
"Medusaephyllum nevadense" = Pachyphyllum horn coral
"Medusaephyllum sp." = Pachyphyllum Milne-Edwards and Haime 1850 horn coral
 Rugosa -
Piceaphyllum sp. horn coral