Hecla Bay Fmn., Melville Island, GSC loc. C140085 (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: Hecla Bay Formation, Late/Upper Givetian (388.1 - 383.7 Ma)

• Late Givetian; asymmmetricus conodont zone.

• group of beds-level stratigraphic resolution

Environment/lithology: interdistributary bay; 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: "interdistributary/interdelta lobe bay"

Size class: macrofossils

Reposited in the GSC

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 35530: authorized by Michael Foote, entered by Michael Foote on 19.12.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

 Actinodontida - Cycloconchidae
Cycloconchidae indet. Ulrich 1884 clam
n. gen. D n. sp. (Tanaodon-like)