A Bohemian-type Silurian (Wenlockian) pelecypod faunule from Arctic Canada

Journal of Paleontology
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Abstract

The pelecypod genera Slava and Rhombopteria are reported for the first time from Canada, where they occur in a limestone concretion within the Cape Phillips Formation, Cornwallis Island, Arctic Archipelago. These genera are characteristic of Silurian rocks in Bohemia, Czechoslovakia. Graptolites from the same concretion indicate the Monograptus ludensis Zone (uppermost Wenlockian); this age is substantiated by associated conodonts, trilobites, vertebrates, and pelecypods but with less precision. It is difficult to explain the occurrence of Slava and Rhombopteria in the middle of Laurentia on the basis of some map reconstructions of the Wenlockian world.

The Canadian material of Slava novaterra n. sp. and Rhombopteria cf. R. mira (Barrande) is described. Leptodesma (Leptodesma) sp. A and an indeterminate grammysiid pelecypod from the same concretion are illustrated. Information is provided to show that Newsomella Foerste, from Wenlockian–Ludlovian rocks of Illinois, Wisconsin, and Tennessee, is not a subgenus of Rhombopteria Jackson.

Publication type Article
Publication Subtype Journal Article
Title A Bohemian-type Silurian (Wenlockian) pelecypod faunule from Arctic Canada
Series title Journal of Paleontology
DOI 10.1017/S0022336000028675
Volume 61
Issue 3
Year Published 1987
Language English
Publisher Paleontological Society
Description 13 p.
First page 508
Last page 520
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