Triquetrorhabdulus inversus Bukry & Bramlette, 1969
Wiseorhabdus Bukry 1981
Bukry, D. & Bramlette, M. N., (1969): Some new and stratigraphically useful calcareous nannofossils of the Cenozoic. - Tulane Studies in Geology. 7: 131-142.
Wise, S. W. & Constans, R. E., (1976): Mid Eocene plankton correlations Northern Italy - Jamaica W.I. - Transactions of the Gulf-Coast Association of Geological Societies. 26: 144-155.