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Sphenolithus pacificus Martini, 1965
Sphenolithus bergenii Howe, 2021
Sphenaster metula Wilcoxon, 1970
Bramlette, M. N., Wilcoxon, J. A., 1967. Middle Tertiary calcareous nannoplankton of the Cipero section, Trinidad, W.I. Tulane Studies in Geology and Paleontology 5, 93-131.
Brönnimann, P., Stradner, H., 1960. Die Foraminiferen- und Discoasteriden-zonen von Kuba und ihre interkontinentale Korrelation. Erdoel-Zeitschrift 76(10), 364-369.
Martini, E., 1965. Mid-Tertiary calcareous nannoplankton from Pacific deep-sea cores. Colston Papers 17, 393-411.
Wilcoxon, J. A., 1970. Sphenaster new genus, a Pliocene calcareous nannofossil from the tropical Indo-Pacific. Tulane Studies in Geology and Paleontology 8, 78-81.
Sphenolithus pacificus
Martini, 1965
Miocene
Pacific deep-sea core DWBG 10