Nannotax3 - ntax_cenozoic - Toweius selandianus

Toweius selandianus

Classification: ntax_cenozoic -> Isochrysidales -> Prinsiaceae -> Toweius -> Toweius selandianus
Sister taxa: T. serotinus, T. pertusus, T. tovae, T. eminens, T. occultatus ⟩⟨ T. reticulum, T. selandianus, T. rotundus, T. patellus, T. callosus, T. magnicrassus ⟩⟨ T. gammation ⟩⟨ T. sp.

Varol1998_7-02-16.jpg
Varol1998_7-02-17.jpg

Taxonomy:

Citation: Toweius selandianus Perch-Nielsen, 1979

Rank: Species

Distinguishing features: Very small to small (2-4µm); narrowly elliptical; central area narrow, spanned by a net.

Farinacci & Howe catalog pages: T. selandianus *

Search data:

Tags	LITHS: placolith, elliptical, CA: ca_conjunct, grill, vacant, CSPH: equant, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Metrics	Lith size: 2->4µm;

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

Geological Range:
Last occurrence (top): within NP5 zone (59.54-61.51Ma, top in Selandian stage). Data source: Varol, 1989
First occurrence (base): within NP4 zone (61.51-63.25Ma, base in Danian stage). Data source: Varol, 1989

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
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Toweius selandianus, synonyms included - Toweius selandianus; Toweius selandius;
See also space-time plot :: Samples map :: Parent: Toweius

References:

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

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

Toweius selandianus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1423 Go to Archive.is to create a permanent copy of this page - citation notes

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