Discolithina aperta Perch-Nielsen, 1971c
Discolithina amphitheatralis Levin & Sherwood, 1971
Koczyia excelsa Perch-Nielsen, 1971c
Bukry, D. & Percival, S. F. 1971. New Tertiary calcareous nannofossils. Tulane Studies in Geology and Paleontology 8: 123-146.
Levin, H. L. & Sherwood, R. W. 1971. A new Eocene species of Discolithina from Texas. Journal of Paleontology. 45(4): 731-733.
Perch-Nielsen, K. 1971c. Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 18(3): 1-76.
Syracosphaera wechesensis
Bukry & Percival, 1971
Middle Eocene
Weches Formation, Roberts School, San Augustine, Texas, USA