Nannotax3 - ntax_cenozoic - Craterolithus Nannotax3 - ntax_cenozoic - Craterolithus

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

Taxonomy:

Citation: Craterolithus Firth 1989
taxonomic rank: genus
Basionym: Craterolithus Firth 1989
Synonyms:
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): at top of NP24 zone (100% up, 26.8Ma, in Chattian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within NP14 zone (46.29-49.11Ma, base in Ypresian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

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


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Craterolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-7-2024

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1701 Go to Archive.is to create a permanent copy of this page - citation notes
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