Lithastrinus septentrionalis Stradner, 1963
Cylindrical nannolith with the tangential c-axis.
Crux, J. A., 1986. Tegulalithus, a new genus of Early Cretaceous calcareous nannofossils. INA Newsletter 8, 88-90.
Stradner, H., 1963. New contributions to Mesozoic stratigraphy by means of nannofossils. Proceedings of the Sixth World Petroleum Congress. Section 1 Paper 4, 167-183.