D'Hondt, Steven; Keller, Gerta; Macleod, Norman (1989): Phylogenetic and stratigraphic analysis of earliest Paleocene planktic foraminifera. Geological Society of America (GSA), Boulder, CO, United States, In: Dymek, Robert F. (chairperson), Shelton, Kevin L. (chairperson), Geological Society of America, 1989 annual meeting, 21 (6), A63, georefid:1991-043890