overview (8)
Arkhangelskiales (2)
Eiffellithales (3)
Holococcoliths (26)
Nannoliths (10)
Podorhabdales (7)
Watznaueriales (1)
Cruciplacolithus Hay & Mohler in Hay et al. 1967
Description: Coccolith structure similar to that of Coccolithus, but central area spanned by disjunct axial cross.
Remarks:
Cruciplacolithus is not usually recorded from the Neogene but in well-preserved samples Cocolithus specimens with central crosses are quite frequent. Also small Cruciplaclithus specimens can occoasionlly be found, as illustrated here from the Pliocene:
Type species: Cruciplacolithus tenuis (Stradner 1961).
Neogene: Cruciplacolithus
Paleogene: Cruciplacolithus tenuis