Weatherall Fmn., Melville Island, GSC loc. C129664 (Devonian of Canada)

Where: Northwest Territories, Canada (73.5° N, 112.0° W: paleocoordinates 2.6° S, 26.5° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Weatherall Formation, Middle Givetian (388.1 - 383.7 Ma)

• Middle Givetian; varcus conodont zone.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; siliciclastic sediments

• See lithology.
• General: "Bivalve-dominated assemblages characterize the middle and upper part of the Weatherall Fm....occur both as storn lag[s] (as evident by thin, dense, sheet-like accumulations of disarticulated and often fragmentary shells with reworked phosphatic nodules) and as in situ assemblages..." This sample: "non-deltaic source proximal shelf"

Size class: macrofossils

Reposited in the GSC

• Other elements occurring in this formation (not necessarily this sample) but not listed by name include: lingulids, fish, nautiloids, tentaculites, crinoid ossicles, trilobites, articulate brachiopods.

Primary reference: P. A. Johnston and Q. H. Goodbody. 1988. Middle Devonian bivalves from Melville Island, Arctic 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 337-346 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 35519: authorized by Michael Foote, entered by Michael Foote on 19.12.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Pterineidae
? Limoptera "n. sp. B" Hall 1869 oyster
 Actinodontida - Cycloconchidae
? Cycloconchidae indet. Ulrich 1884 clam
n. gen. A n. sp.
 Nuculida - Nuculidae
Nuculopsis "n. sp. A" Girty 1912 nut clam
Nuculopsis "n. sp. B" Girty 1912 nut clam