Nannotax3 - ntax_main - Staurolithites mitcheneri Nannotax3 - ntax_main - Staurolithites mitcheneri

Staurolithites mitcheneri


Classification: ntax_main -> Mesozoic nannofossils -> Eiffellithales -> Chiastozygaceae -> Staurolithites -> Staurolithites mitcheneri
Sister taxa: << < S. halfanii, S. minutus, S. ngurumahambaensis, S. quadriarcullus, S. siesseri ⟩⟨ S. coroniformis, S. gausorhethium, S. leptostaurus ⟩⟨ S. ormae, S. handleyi, S. laffittei, S. dorfii, S. lumina ⟩⟨ S. imbricatus, S. dicandidula, S. mitcheneri ⟩⟨ S. angustus, S. mutterlosei, S. zoensis ⟩⟨ S. aachenus, S. aenigma, S. ellipticus, S. elongatus, S. integer, S. mielnicensis, S. parma, S. sp.

Taxonomy:

Citation: Staurolithites mitcheneri (Applegate & Bergen, 1988) Rutledge & Bown in Bown et al., 1998
Taxonomic rank: species
Basionym: Vekshinella mitcheneri Applegate & Bergen, 1988
Synonyms:

Distinguishing features:
Parent taxon (Staurolithites): Loxolith muroliths with relatively narrow rim and wide central area spanned by axial cross bars. The cross is usually spine bearing. Inner/proximal rim cycle is variably developed and so the LM image may be unicyclic or bicyclic. NB The bicyclic/unicyclic separation is simply controlled by how far the inwards the R-units develop so, although it is a useful identification criterion, it almost certainly has no real phylogenetic significance and would be a very poor character for defining genera.
This taxon: Small (holotype 4 µm) bicyclic Staurolithites with narrow central area filled with a narrow axial cross. The bright inner cycle is broader than the outer cycle.

Farinacci & Howe catalog pages: V. mitcheneri *

Search data:
LITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, process, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Lith size: 3->5µm;
Data source notes: holotype +/-1µm
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Early Aptian Substage (118.70-121.40Ma, top in Aptian stage). Data source: Bown et al. 1998
First occurrence (base): within Early Valanginian Substage (135.70-137.70Ma, base in Valanginian stage). Data source: Bown et al. 1998

Plot of occurrence data:

References:

Aguado, R., Castro, J. M., Company, M. & de Gea, G. A. (1999). Aptian bioevents — an integrated biostratigraphic analysis of the Almadich Formation, Inner Prebetic Domain, SE Spain. Cretaceous Research. 20: 663-683. gs

Aguado, R., et al. (2018). A new record of the Weissert episode from the Valanginian succession of Cehegín (Subbetic, SE Spain): bio- and carbon isotope stratigraphy. Cretaceous Research. 92: 122-137. gs

Applegate, J. L. & Bergen, J. A. (1988). Cretaceous calcareous nannofossil biostratigraphy of sediments recovered from the Galicia Margin, ODP Leg 103. Proceedings of the Ocean Drilling Program, Scientific Results. 103: 293-348. gs O

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

Covington, J. M. & Wise, S. W. (1987). Calcareous nannofossil biostratigraphy of a Lower Cretaceous deep-sea fan complex: Deep Sea Drilling Project Leg 93 Site 603, lower continental rise off Cape Hatteras. Initial Reports of the Deep Sea Drilling Project. 93: 617-660. gs O


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Staurolithites mitcheneri compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 21-6-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11134 Go to Archive.is to create a permanent copy of this page - citation notes



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