Abstract

A deep architectural analysis of the Paleocene, porcelaneous larger foraminifera Taberina daviesiHenson, 1950 has been conducted for the first time, which has permitted clarification of its generic taxonomic attribution and a more accurate assessment of its palaeobiogeographical and biostratigraphical distributions. The crosswise oblique pattern followed by the stolon axes in T. daviesi differs from the radial pattern showed in the type species of the genus Taberina, T. cubanaKeijzer, 1945. Moreover, differences in the embryonic architecture and the type of growth and final test shape between these species support a change in the generic taxonomic attribution. Thus, a new genus, Azzarolina, is proposed for the former species. Azzarolina daviesi is a common biostratigraphic marker for the Paleocene with a broad distribution in the Arabian Peninsula and surrounding areas.

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