Nannotax3 - ntax_mesozoic - Ceratolithina

Ceratolithina


Classification: ntax_mesozoic -> Nannoliths inc sedis -> Nannoliths inc sed - other -> Ceratolithina
Sister taxa: Ceratolithina, Ceratolithoides, Liliasterites, Marthasterites, Orthogonoides, Rhomboaster, Tripinnalithus, Watkinsia

Distinguishing features:
Parent taxon (Nannoliths inc sed - other): Nannolith genera without clear affinities to any other genera
This taxon: Monocrystalline, straight or hooked, rod-like nannoliths with lateral spurs and/or blades.


Daughter taxa (time control age-window is: 0-800Ma)Granddaughter taxa
bicornuta
Ceratolithina bicornuta
Broadly hook-shaped nannolith comprising two parallel rods with hooked ends joined by an oblique blade/bridge.

cruxii and variants
Ceratolithina capitanea
Large with long blunt-ended sail-shaped blade attached along entire length of rod

Ceratolithina copis
Straight to slightly curved rod with (sub)rectangular lateral blade.

Ceratolithina cruxii
Straight to slightly curved rod with triangular lateral blade.

Ceratolithina duplex
Species with double rod and blade
Ceratolithina duplex subsp. duplex
Ceratolithina duplex subsp. gemina

hamata and variants
Ceratolithina hamata
Broadly hook-shaped nannolith with two curving blades coming off a thicker main rod, forming a C-shaped lith.
Ceratolithina hamata subsp. falcata
Ceratolithina hamata subsp. hamata

Ceratolithina naturalisteplateauensis
Straight to slightly curved rod with two triangular lateral blades

Ceratolithina sp.
Specimens not identified to species level

Taxonomy:

Citation: Ceratolithina Martini, 1967
Rank: Genus
Type species: Ceratolithina hamata Martini, 1967

Farinacci & Howe catalog pages: Ceratolithina *

Distinguishing features:
Parent taxon (Nannoliths inc sed - other): Nannolith genera without clear affinities to any other genera
This taxon: Monocrystalline, straight or hooked, rod-like nannoliths with lateral spurs and/or blades.


Morphology:

The c-axis is oblique to the nannolith length so the nanoliths typically show high birefringence when parallel to the cross-polars and minimum birefrngnce in the 45° position.

Size:


Ecology & Biogeography


Biology & life-cycles

Phylogenetic relations

Search data:
LITHS: nannolith-other, asymmetric, horseshoe-shaped, CROSS-POLARS: 1ou,
Lith size: 8->25µm;
Data source notes: size range of included species
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 Turonian Stage (100% up, 89.8Ma, in Turonian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Albian Stage (0% up, 113Ma, in Aptian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Lower Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 86-131. gs O

Burnett, J. A. (1997a). 'Middle' Cretaceous morphological diversity within the genus Ceratolithina Martini, 1967. Journal of Nannoplankton Research. 19(1): 57-65. gs V O

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gs O

Martini, E. (1967). Ceratolithina hamata n. g., n. sp., aus dem Alb von N-Deutschland (Nannoplankton, incertae sedis). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 128: 294-298. gs


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Ceratolithina compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-12-2022

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10210 Go to Archive.is to create a permanent copy of this page - citation notes



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