Publication Date:
2022-07-15
Description:
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 Nonionoides 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.
Description:
research
Keywords:
ddc:562
Language:
German
Type:
doc-type:article
,
publishedVersion
Permalink