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Nonionoides n. gen. demens (Bık, 1964), eine bisher verkannte Foraminiferenart aus dem Aquitan des Mainzer Beckens

Peter Schäfer, FID GEO
2022

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Investigations on the systematic position of the foraminifer generally refered to as Hastigerina demens known from the Aquitanian of the Mayence basin have shown, that a new classification has to be made. Based on the shown protoforamina the species has to be considered as belonging to the family Polystomellidae EIMER & FICKERT, 1899. The aberrant test of the species which above all appears in the evolute arrangement of the chambers, has induced the author to place the species in a new genus
more » ... ionoides n. gen. For N. demens a benthonic way of life has to be assumed. Therefore no autochthon planctonic living foraminifers are known from the Hydrobia beds and Corbicula beds of the Mainz basin.
doi:10.23689/fidgeo-5439 fatcat:mxnpj26uzzbojdd4iytz2dvy3u
lang:de
Citation

Peter Schäfer, FID GEO. "Nonionoides n. gen. demens (Bık, 1964), eine bisher verkannte Foraminiferenart aus dem Aquitan des Mainzer Beckens." (2022)