Corollithion msakyae
Set number: 1857
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10µm
Rotelapillus msakyae Lees, 2007
An elliptical species of Corollithion has four arms forming a symmetrical diagonal cross, creating an acute angle along the short axis in the central area. Its optical properties align with those of Corollithion. This species is assigned to Corollithion due to the absence of key characteristics of Rotelapillus, which is distinguished by protruding, short spines at the distal end of the wall.
Lees, J. A. 2007. New and rarely reported calcareous nannofossils from the Late Cretaceous of coastal Tanzania: outcrop samples and Tanzania Drilling Project Sites 5, 9 and 15. Journal of Nannoplankton Research 29(1): 39-65.
Varol, O. 2025a. A practical guide to optical studies of calcareous nannofossils. Grzybowski Foundation Special Publication. 29: 1-222