Paleogene (9)
Coccolithales (2)
Coccoliths ord inc sed (2)
Discoasterales (4)
Holococcoliths (1)
Isochrysidales (2)
Mesozoic Survivors (4)
Nannoliths ord inc sed (5)
Syracosphaerales (3)
Zygodiscales (3)
Neogene (8)
Calcidiscaceae (5)
Coccolithaceae (6)
Genus Hayella Gartner, 1969
Description:
Remarks: Hayella was desribed fom the Eocene and assignment of the Miocene species H. challengeri to it is tentative.
Type species: Hayella situliformis
Neogene: Hayella