First issued in release COL21.4.
Last used in release COL23.9
Published in
Arnal, R. W. (1984). The Mohnian-Luisian boundary in the Coccolithus miopelagicus subzone, with new and related species of foraminifers. The Journal of Foraminiferal Research, 14(1): 1–15. https://doi.org/10.2113/gsjfr.14.1.1