(8)
Coccolithales (2)
Calcidiscaceae (5)
Coccolithaceae (6)
Description: Coccosphere monomorphic, spherical. Coccoliths elliptical with narrow placolith rim surrounding central-area filled by four (rarely three) plates. Coccoliths 4-8 µm long.
Remarks: A rare species
Range: Pliocene to Recent