First issued in release COL21.6.
Last used in release COL23
Published in
Frentzen, K. (1944). Die agglutinierenden Foraminiferen der Birmensdorfer Schichten (Transversarius-Zone in Schwammfazies) des Gebietes um Blumberg in Baden. Paläontologische Zeitschrift, 23(3–4): 317–343. https://doi.org/10.1007/bf03160441