Neocrepidolithus cruciatus


Classification: ntax_cenozoic -> Mesozoic Survivors -> Chiastozygaceae -> Neocrepidolithus -> Neocrepidolithus cruciatus
Sister taxa: N. cohenii, N. cruciatus, N. dirimosus, N. fossus, N. grandiculus, N. neocrassus, N. sp.

Taxonomy:

Citation: Neocrepidolithus cruciatus (Perch-Nielsen, 1979) Perch-Nielsen, 1981
Rank: Species
Basionym: Crepidolithus cruciatus Perch-Nielsen, 1979

Distinguishing features: Neocrepidolithus with narrow central area filled with an axial cross. Clearly bicyclic in LM.

Farinacci & Howe catalog pages: C. cruciatus *

Search data:
TagsLITHS: murolith, elliptical, CA: cross-axial, closed, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 4->7µm;
Data source notes: lith size very approx (need to check OD figs)
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): near base of NP4 zone (10% up, 63.1Ma, in Selandian stage). Data source: Varol, 1989, fig. 12.4
First occurrence (base): within Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source: Burnett 1998

Plot of occurrence data:

References:

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

Perch-Nielsen, K. (1979a). Calcareous nannofossil zonation at the Cretaceous/Tertiary boundary in Denmark. In, Birkelund, T. & Bromley, R. G. (eds) Proceedings Cretaceous-Tertiary Boundary Events Symposium, Copenhagen, 1. Copenhagen 115-135. gs

Perch-Nielsen, K. (1981b). New Maastrichtian and Paleocene calcareous nannofossils from Africa, Denmark, and USA and the Atlantic, and some Paleocene lineages. Eclogae Geologicae Helvetiae. 74(3): 831-863. gs V O

Varol, O. (1989c). Palaeocene calcareous nannofossil biostratigraphy. In, Crux, J. A. & van Heck, S. E. (eds) Nannofossils and their applications: Proceedings of the 2nd INA Conference, London 1987. British Micropalaeontological Society Publication Series. 265-310. gs V O

Varol, O. (1998). Palaeogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 200-224. gs


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Neocrepidolithus cruciatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 2-3-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=932 Go to Archive.is to create a permanent copy of this page - citation notes



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