Coronosphaera clathrata

Syracosphaera clathrata Roth & Hay in Hay et al., 1967 [holotype size: 4.9

Syracosphaera lamina of de Kaenel & Villa, 1996 [pre-occupied by Syracosphaera lamina Lecal-Schlauder, 1951]

Syracosphaera tanzanensis Bown, 2005

Loxolith having a non-birefringent outer wall, birefringent inner wall and a wide central area.

Bown, P. R., (2005): Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). - Journal of Nannoplankton Research. 27(1): 21-95.

de Kaenel, E. & Villa, G., (1996): Oligocene-Miocene calcareous nannofossil biostratigraphy and paleoecology from the Iberian Abyssal Plain. - Proceedings of the Ocean Drilling Program, Scientific Results. 149: 79-145.

Hay, W. W., Mohler, H. P., Roth, P. H., Schmidt, R. R. & Boudreaux, J. E., (1967): Calcareous nannoplankton zonation of the Cenozoic of the Gulf Coast and Caribbean-Antillean area, and transoceanic correlation. - Transactions of the Gulf-Coast Association of Geological Societies. 17: 428-480.

Lecal-Schlauder, J., (1951): Recherches morphologiques et biologiques sur les Coccolithophorides Nord-Africains. - Annales de l'Institut Océanographique, Monaco & Paris. 26: 255-362.