Remarks

The kryptococcoliths exhibit a laminar arrangement of segments, as in Braarudosphaeraceae, and a spiral arrangement, as in Nannoconaceae. From a plan view, they demonstrate length-slow (+) elongation. These structures are classified as
coccoliths due to their formation of a characteristic coccosphere, a unique feature of coccolithophores.

References

Aubry, M. -P. 2013. Cenozoic Coccolithophores: Braarudosphaerales. Micropaleontology Press, American Museum of Natural History, New York. 1-336.

Deflandre, G. 1959. Sur les nannofossiles calcaires et leur systématique. Revue de Micropaléontologie 2: 127-152.