Abstract

Chitinous microorganisms from Carboniferous coals described and assigned to the genera Microaulopora and Guembelina by O. Kuntz in 1895 are discussed on the basis of the original descriptions and figures. The name Guembelina which has recently been shown to be a junior synonym of Heterohelix Ehrenberg, 1841, is doubly invalidated for use in the Foraminifera in being a junior homonym of Guembelina Kuntz, 1895.

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