Silurian Brachiopoda, Upper Allen Bay Formation, Griffiths Island, Arctic Archipelago, and Uppermost Whittaker Formation, Mackenzie Mountains, Northwest Territories

A low diversity fauna of brachiopods is described from the top beds of the Whittaker Formation of the central Mackenzies, and the upper part of the Allen Bay Formation, Griffiths Island. The fauna of the two formations together total 10 species, although only two species are common to die two units....

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Bibliographic Details
Published in:Canadian Journal of Earth Sciences
Main Author: Lenz, Alfred C.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1974
Subjects:
General Earth and Planetary Sciences
Arctic
Northwest Territories
Allen Bay
Arctic Archipelago
Mackenzie mountains
Online Access:http://dx.doi.org/10.1139/e74-107
http://www.nrcresearchpress.com/doi/pdf/10.1139/e74-107
Description
Summary:A low diversity fauna of brachiopods is described from the top beds of the Whittaker Formation of the central Mackenzies, and the upper part of the Allen Bay Formation, Griffiths Island. The fauna of the two formations together total 10 species, although only two species are common to die two units. The faunas are dominated by the atrypid Spirigerina, and the rhynchonellids Ancillotoechia and Decorapitgnax. The faunas are correlated with the upper Wenlockian or lower Ludlovian, and are considered the equivalents of the shallow water Salopian or Sphaerirhynchia benthic communities.

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