Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy;Vol.XIX, Nos.1-2

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Calcareous Nannoplankton and Problematic Microorganisms Found in the Late Palaeozonic Limestones

Minoura, Nachio;Chitoku, Tsutomu

Permalink : http://hdl.handle.net/2115/36683

Abstract

Two species of calcareous nannoplankton belonging to genus Thoracosphaera found in the Upper Pennsylvanian limestones of Kansas, U.S.A., are systematically described. Two other calcareous microorganisms of uncertain afinity are also described. These two forms occur in the Upper Pennsylvanian limestones and some Lower Permian limestones.

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