Genus Pontosphaera Lohmann, 1902
Description: Coccoliths are muroliths, central area with variable number of perforations. V-units form narrow imbricate outer wall, R-units form inner wall and central-area.
Remarks: Species level taxonomy is poorly worked out in the Neogene. The species included here are all well-established extant taxa, and they are all
frequently cited but some authors also use other taxa (e.g. Varol,
1989).
Synonyms: Crassapontosphaera Boudreaux and Hay, 1969; Discolithina Loeblich and Tappan, 1963; Discolithus Huxley, 1868; Koczyia Boudreaux and Hay, 1969.
Neogene: Pontosphaera