Genus GEPHYROCAPSA Kamptner, 1943
Gephyrocapsa caribbeanica Boudreaux and Hay, 1969
Remarks. Specimens of Gephyrocapsa 3.0-5.5 µm in size and with a small central area are included under this species name. The lowest occurrence of Gephyrocapsa caribbeanica was generally recorded from Zone NN19a except for Hole 899A.
Small Gephyrocapsa spp.
Remarks. Very small specimens of Gephyrocapsa (less than 3 µm in size) are included under this denomination. They were recorded in the lower Pliocene (Zone NN14/15) and in the upper Pliocene (Zone NN18) through the Pleistocene.
Gephyrocapsa sp.
Remarks. Specimens of Gephyrocapsa (3-4 µm) of Pliocene age are assigned to this group. They show a sporadic occurrence in the lower upper Pliocene. A more continuous range was recorded from the uppermost Pliocene (Zone NN19a) into the Pleistocene.
Sphenolithus spp.
Remarks. Sphenolithus abies and S. neoabies are grouped under this label.
Genus RETICULOFENESTRA Hay, Mohler, and Wade, 1966
Reticulofenestra doronicoides (Black and Barnes) Pujos-Lamy, 1985
Remarks. These specimens of Reticulofenestra (5-6 µm) of Pliocene age have a largely elliptical outline, small central area, and extinction lines strongly curved toward the outer part of the coccolith. The lowest occurrence was generally recorded in Zone NN16.