Quadrithyris Zone Brachiopods, Bathurst Is., Section 34, GSC loc. 67038 (Devonian of Canada)

Where: Nunavut, Canada (76.0° N, 98.0° W: paleocoordinates 2.1° S, 26.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Stuart Bay Formation, Lochkovian (419.2 - 410.8 Ma)

• Age of faunas discussed at length in this paper. Author concludes they are correlative with Quadrithyris Zone of Nevada, and of Late Lochkovian age.

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; limestone

• "well-preserved, articulated specimens"

•SEP: this is a tough one. The unit is definitely clastic dominated and contains only minor carbonate away from the reefs. This environment is probably above normal wave base, relatively near a sed source but sufficiently far out in the cratonic basin to be relatively starved of clastic sediments, which are probably transported into basin primarily during storms. it is also likely to be part of the TST; for all of these reasons, I have assigned it a lower shorface DEPTH.

• "...from a cream-coloured, coarsely crystalline limestone, a kind of rock strongly reminiscent of the Koneprusy Limestone of the Pragian Stage of Bohemia which is supposed to represent a reefal lithology."

Reposited in the GSC

Primary reference: J. G. Johnson. 1975. Devonian brachiopods from the Quadrithyris Zone (Upper Lochkovian), Canadian arctic archipelago. Geological Survey of Canada Bulletin 235:5-36 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 26647: authorized by Michael Foote, entered by Michael Foote on 21.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Paper is on brachiopods. Some other faunal elements are mentioned for some collections, especially when biostratigraphically relevant.
Show authors, comments, and common names
Rhynchonellata
 Pentamerida - Camerellidae
"Camerella" sp.
"Camerella" sp. Billings 1859
"C." sp.
 Pentamerida - Gypidulidae
Gypidula thorsteinssoni n. sp.
 Rhynchonellida -
Rhynchonellida indet.
 Rhynchonellida - Machaerariidae
Thliborhynchia kerri n. sp.
 Atrypida - Atrypidae
Atrypa sp.
Atrypa sp. Dalman 1828
 Atrypida - Atrypinidae
Spirigerina supramarginalis, "Ogilviella cf. rotunda" = Rhynchogilviella rotunda
"Ogilviella cf. rotunda" = Rhynchogilviella rotunda Lenz 1968
 Spiriferinida - Cyrtinidae
Cyrtina sp.
Cyrtina sp. Davidson 1858
Strophomenata
 Strophomenida - Leptostrophiidae
"Brachyprion" mirabilis