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Fenestrida and Rhabdomesida (Bryozoa) of the Otter Formation (Viséan), central Montana

Published online by Cambridge University Press:  20 May 2016

Ernest H. Gilmour  and
Miriam E. Mccolloch
Ernest H. Gilmour
Affiliation:
Department of Geology, Eastern Washington University, Cheney 99004
Miriam E. Mccolloch
Affiliation:
Department of Geology, Eastern Washington University, Cheney 99004
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Abstract

Four species of Fenestrida and two species of Rhabdomesida occur in the Otter Formation (Viséan) of the Little Belt Mountains, central Montana. Four species are new: Laxifenestella snyderi n. sp., Rectifenestella concava n. sp., Streblotrypa (Streblascopora) eastoni n. sp., and Nikiforovella beltensis n. sp. Several of these species are very similar to species described in Viséan rocks of central Mongolia, northeast Russia, Kazakhstan, and Japan. Fabifenestella cf. F. vulgaris compares closely with F. vulgaris Gorjunova and Morozova from the Lower Carboniferous of northern Mongolia. Most of the bryozoans in the Otter Formation occur in the normal marine, subtidal carbonate mud and calcareous shale microfacies.

Type
Research Article
Information
Journal of Paleontology , Volume 69 , Issue 5 , September 1995 , pp. 813 - 830
Copyright
Copyright © The Paleontological Society 

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