Staurolithites crux


Classification: ntax_mesozoic -> Eiffellithales -> Chiastozygaceae -> Staurolithites -> Staurolithites crux
Sister taxa: S. crux, S. dibrachiatus, S. stradneri ⟩⟨ S. dentatus, S. eiffellithoides, S. flavus, S. halfanii, S. minutus, S. ngurumahambaensis, S. quadriarcullus, S. siesseri ⟩⟨ S. coroniformis, S. gausorhethium, S. leptostaurus ⟩⟨ S. ormae, S. handleyi> >>

Distinguishing features: Small to medium-sized Staurolithites with a narrow rim that is not discernibly bicyclic in the LM, and an axially aligned central cross.


Taxonomy:

Citation: Staurolithites crux (Deflandre & Fert, 1954) Caratini, 1963
Rank: Species
Basionym: Discolithus crux Deflandre & Fert, 1954
Synonyms:

Farinacci & Howe catalog pages: D. crux * , S. rectus *

Distinguishing features: Small to medium-sized Staurolithites with a narrow rim that is not discernibly bicyclic in the LM, and an axially aligned central cross.


Morphology: The type of this species is from the Eocene but has been interpreted as reworked. Thierstein (1973) recommended use of Vagalapilla stradneri ( = Staurolithites stradneri) as an alternative name for Mesozoic specimens formerly placed in V. crux.

Search data:
TagsLITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, process, CROSS-POLARS: rim-unicyclic, V-prominent,
MetricsLith size: 4->7µm;
Data source notes: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

See also: Staurolithites stradneri ;

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Burnett 1998
First occurrence (base): within Hauterivian Stage (130.77-133.88Ma, base in Hauterivian stage). Data source: Burnett 1998

Plot of occurrence data:

References:

al Rawahi, Z. & Dunkley Jones, T. (2019). Calcareous nannofossil assemblages of the Late Cretaceous Fiqa Formation, north Oman. Journal of Micropalaeontology. 38(1): 25-54. gs V O

Black, M. (1971a). Coccoliths of the Speeton Clay and Sutterby Marl. Proceedings of the Yorkshire Geological Society. 38: 381-424. gs

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

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

Caratini, C. (1963). Contribution à l'étude des coccolithes du Cénomanien supérieur et du Turonien de la région de Rouen. PhD thesis, Université d'Alger, Faculté des Sciences, Publication du Laboratoire de Géologique Appliquée. -. gs

Deflandre, G. & Fert, C. (1954). Observations sur les coccolithophoridés actuels et fossiles en microscopie ordinaire et électronique. Annales de Paléontologie. 40: 115-176. gs

Hoffmann, N. (1970c). Taxonomische Untersuchungen an Coccolithen aus der Kreide Norddeutchlands anhand elektronenmikroskopischer Aufnamen. Hercynia. 7(1-3): 163-198. gs V O

Medd, A. W. (1979). The Upper Jurassic coccoliths from the Haddenham and Gamlingay boreholes (Cambridgeshire, England). Eclogae Geologicae Helvetiae. 72: 19-109. gs V O

Thierstein, H. R. (1973). Lower cretaceous calcareous nannoplankton biostratigraphy. Abhandlungen der Geologischen Bundesanstalt. 29: 3-52. gs V O


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Staurolithites crux compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-4-2021

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