Nannotax3 - ntax_main - Staurolithites elongatus Nannotax3 - ntax_main - Staurolithites elongatus

Staurolithites elongatus


Classification: ntax_main -> Mesozoic nannofossils -> Eiffellithales -> Chiastozygaceae -> Staurolithites -> Staurolithites elongatus
Sister taxa: << < 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 elongatus (Bukry, 1969) Burnett, 1997
Taxonomic rank: species
Basionym: Vagalapilla imbricata elongata Bukry, 1969

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: long elliptical with broad crossbars

Farinacci & Howe catalog pages: V. imbricata elongata *

Search data:
LITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, process, CROSS-POLARS: rim-bicyclic, V-prominent,
Lith size: 4->6µm;
Data source notes: illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Late Maastrichtian Substage (66.04-70.10Ma, top in Maastrichtian stage). Data source: Burnett 1998
First occurrence (base): within Santonian Stage (83.65-85.70Ma, base in Santonian 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 O

Bukry, D. (1969). Upper Cretaceous coccoliths from Texas and Europe. University of Kansas Paleontological Contributions, Articles. 51 (Protista 2): 1-79. gs O

Burnett, J. A. (1997c). New species and new combinations of Cretaceous nannofossils and a note on the origin of Petrarhabdus (Deflandre) Wise & Wind. Journal of Nannoplankton Research. 19(2): 133-146. gs

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

Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 31(1): 39-56. gs


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Staurolithites elongatus 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=11121 Go to Archive.is to create a permanent copy of this page - citation notes



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