Western Prince of Wales Island, Section 4, Unit 4, GSC loc. C26829 (Devonian of Canada)

Also known as Hebetoechia Community

Where: Nunavut, Canada (73.5° N, 100.0° W: paleocoordinates 2.2° S, 30.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Lochkovian (419.2 - 410.8 Ma)

• Unnamed formation.

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; gray lime mudstone

• Deposits in this region are of two general kinds: shallow-water stable carbonate platform (generally in the NW part of Arctic Archipelago) and deeper basinal facies (generally to the SE). This collection is in the former.

•"This community may have flourished slightly seaward of the position occupied by the bioherm. However, it represents a relatively quieter water environment, free from effects of waves and tides as evidenced by the large number of articulated valves as well as common to abundant argillaceous material." Smith places Hebetoechia Comm. in the fourth of six zones from near- to offshore.

•SEP environmental call based on given info and regional context; I suspect this could also be protected shallow subtidal

• For this section in general: "thin-bedded, argillaceous lime-mudstone with common to abundant brachiopods [etc.]"

•For this unit: "Lime mudstone: thin to medium bedded; medium dark grey..."

Reposited in the GSC

• Smith gives specimen counts.

Primary reference: R. E. Smith. 1980. Lower Devonian (Lochkovian) biostratigraphy and brachiopod faunas, Canadian arctic islands. Geological Survey of Canada Bulletin 308:1-155 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 26433: authorized by Michael Foote, entered by Michael Foote on 15.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Focus of the entire monograph is on brachiopods. Other taxa mentioned but not necessarily listed in detail.
Show authors, comments, and common names
Conodonta
 Ozarkodinida -
Ozarkodina "n. sp. 4", "Ozarkodina remscheidensis" = Nicollidina remscheidensis
Ozarkodina "n. sp. 4" Branson and Mehl 1933 conodont
"Ozarkodina remscheidensis" = Nicollidina remscheidensis Ziegler 1960 conodont
Strophomenata
 Strophomenida - Amphistrophiidae
Mesodouvillina musculusvarius n. sp.
Rhynchonellata
 Rhynchonellida - Hebetoechiidae
Hebetoechia ornatrix
 Orthida - Schizophoriidae
Schizophoria fossula n. sp.