DFM4 zone brachiopods, western Canada (Devonian of Canada)

Also known as Zone of Cyrtiopsis nahanniensis

Where: Alberta, Canada (60.0° N, 126.0° W: paleocoordinates 1.6° S, 40.5° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Early/Lower Famennian (376.1 - 370.6 Ma)

• Famennian; rhomboidea conodont zone.

• formation-level stratigraphic resolution

Environment/lithology: marine; carbonate

• "Carbonate Succession" (with clastics in lower part)

Size class: macrofossils

Primary reference: G. O. Raasch. 1988. Famennian faunal zones in western Canada. 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 619-631 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 35541: authorized by Michael Foote, entered by Michael Foote on 19.12.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Productida - Productidae
Leioproductus coloradoensis
Rhynchonellata
 Athyridida - Athyrididae
Cleiothyridina sp.
Cleiothyridina sp. Buckman 1906
C. n. sp. (of Crickmay)
 Orthida - Schizophoriidae
Schizophoria sp.
Schizophoria sp. King 1850
 Spiriferida - Cyrtospiriferidae
Cyrtiopsis nahanniensis, Cyrtospirifer sp., Tenticospirifer keleticus
Cyrtospirifer sp. Nalivkin 1924
 Rhynchonellida - Pugnacidae
"Pugnax" rara
 Rhynchonellida - Trigonirhynchiidae
Ptychomaletoechia contractiformis, Ptychomaletoechia septentrionalis, Ptychomaletoechia serva, Sinotectirostrum mackenziei, Sinotectirostrum medicinale
 Rhynchonellida - Leiorhynchidae
Basilicorhynchus basilicum, Rugaltarostrum madisonense, Eoparaphorhynchus maclareni