Nannotax3 - ntax_cenozoic - Craterolithus Nannotax3 - ntax_cenozoic - Craterolithus


Classification: ntax_cenozoic -> Coccolith families inc sed -> Coccolith genera inc sed -> Craterolithus
Sister taxa: Aliculosphaera, Biantholithus, Camuralithus, Centumgemina, Craterolithus, Ellipsolithus, Gladiolithus, Ilselithina, Leesella, Luminocanthus, Pedinocyclus, Petasus

Daughter taxa (time control age-window is: 0-800Ma)
Craterolithus eolutetiensis

Craterolithus hirsutus

Craterolithus hoerstgensis

Craterolithus plenilutetiensis


Citation: Craterolithus Firth 1989
Rank: genus
Basionym: Craterolithus Firth 1989
Taxonomic discussion: Steurbaut and Nolf (2021) proposed a new genus - Luminocanthus – with four species – L. hirsutus (Müller), L. hoerstgensis (Müller), L. eolutetiensis and L. plenilutetiensis. However, one of these species -L. hoerstgensis – had already been proposed as the holotype of another genus Craterolithus Firth, 1989. While it is agreed that this is a discrete, if rare, genus, because the name Craterolithus has priority, new combinations are necessary. Conversely, the scanning electron microscope (SEM) study of Firth (1989) showed that C. hoerstgensis has a very distinctive and unusual morphology, so it is possible that the other species would be better classified in a separate genus. However, this would require SEM imagery, which is not currently available. The genus Luminocanthus was included in the Calcidiscaceae by Steurbaut and Nolf (2021), and this is certainly possible, although more data is needed to confirm this. Consequently, is left as a genus incertae sedis. [Young 2023]

Farinacci & Howe catalog pages: Craterolithus *

Search data:
Lith size: 0->0µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP24 zone (26.84-29.62Ma, top in Chattian stage). Data source:
First occurrence (base): within NP23 zone (29.62-32.02Ma, base in Rupelian stage). Data source:

Plot of occurrence data:


Firth, J. V. (1989). Eocene and Oligocene calcareous nannofossils from the Labrador Sea, ODP Leg 105. Proceedings of the Ocean Drilling Program, Scientific Results. 105: 263-286. gs

Young, J. R. (2023). Some proposed changes to the systematics of Cenozoic and Mesozoic nannoplankton. Journal of Nannoplankton Research. 41(1): 15-25. gs


Craterolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-9-2023

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