Heliolithaceae
Type Genus
Heliolithus Bramlette & Sullivan, 1961
Description
Columnar nannofossils consist of a column and one or two discs, which may or may not be birefringent. Vertically arranged pillar-like segments form the column, which is birefringent in plan and side views.
References
Bramlette, M. N. & Sullivan, F. R. 1961, Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology 7(2): 129-188.
Hay, W. W. & Mohler, H. P. 1967, Calcareous nannoplankton from Early Tertiary rocks at Point Labau, France and Paleocene-Early Eocene correlations. Journal of Paleontology 41(6): 1505-1541.
