Nannotax Enabling nannofossil research

Description: Elliptical or circular placolith coccolith showingthe typical coccolthaceae rim structure (V-unit forms distal shield and lower cycle of central-area; R-unit forms proximal shield and upper cycle of central-area), central pen or spanned by disjunct bar on proximal surface.  

Remarks: Circular species do not occur in Neogene. 

Type species: Coccolithus pelagicus (Wallich, 1877) Schiller, 1930