Nannotax3 - ntax_mesozoic - Stephanolithion laffittei

Stephanolithion laffittei

Classification: ntax_mesozoic -> hidden -> deleted -> Stephanolithion laffittei
Sister taxa: << < O. prasina, O. rhombica, Orthopithonella, O. geometrica, O. misurinae, P. fletcheri, P. bownii, P. geometrica, P. triassica subsp. punctata, P. triassica subsp. triassica, P. charlotteii, P. fistulatus, S. pseudobiskayae, S. gephyrion, S. acutiferrus, S. laffittei, Thoracosphaera, T. wombatensis, Z. sisyphus, W. communis, L. primigenius, C. crucifer, T. senarius, Z. elegans, S. cotortuosus, N. funiculus group, L. imprimus, S. humilis

Distinguishing features: Sub-circular Stephanolithion with central cross and short rim spines

TypeFig Rotelapillus laffitei.jpg

Taxonomy:

Citation: Stephanolithion laffittei Noël, 1957

Rank: species

Taxonomic discussion: Widely used for Rotelapillus coccoliths with central area spanned by eight radial bars and equivalent in sense to Rotelapillus crenulatus (Stover, 1966). However, the two type sketches (from the uppermost Jurassic) of laffittei are of different looking species, neither of which looks like the ‘crenulatus’ species concept. For further information, see Rotelapillus crenulatus.

Farinacci & Howe catalog pages: S. laffittei *

Distinguishing features: Sub-circular Stephanolithion with central cross and short rim spines

Search data:

Tags	LITHS:
Metrics	Lith size: 0->0µm;

The morphological data given here can be used on the advanced search page. See also these notes

See also: Rotelapillus crenulatus ;

Geological Range:
Notes: The numerous occurrences recorded in the Neptune database will almost entirely be of Rotelapillus crenulatus
Last occurrence (top): within Late Jurassic Epoch (145.01-163.47Ma, top in Tithonian stage). Data source: Bown & Cooper 1998
First occurrence (base): within Late Jurassic Epoch (145.01-163.47Ma, base in Oxfordian stage). Data source: Bown & Cooper 1998

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: deleted

References:

Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 34-85. gs

Noël, D. (1957). Coccolithes des terrains Jurassiques de l'Algérie. Publications du Service de la Carte Géologique de l'Algérie (Nouvelle Série) Bulletin. 8: 303-385. gs

Stephanolithion laffittei compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-3-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11153 Go to Archive.is to create a permanent copy of this page - citation notes

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