Nannoconus minutus


Classification: Mesozoic -> Braarudosphaerales -> Nannoconaceae -> Nannoconus -> N. truitti group -> Nannoconus minutus
Sister taxa: N. cornuta, N. donnatensis, N. elongatus, N. inconspicuus, N. longus, N. minutus, N. multicadus, N. planus, N. quadriangulus, N. quadricanalis, N. truittii,

Distinguishing features: Relatively small (type material diameter 5.0-6.5 µm), cylindrical and moderately tall (height = width).


Taxonomy:

Citation: Nannoconus minutus Brönnimann, 1955
Rank: Species

Farinacci & Howe catalog pages: Nannoconus minutus *

Distinguishing features: Relatively small (type material diameter 5.0-6.5 µm), cylindrical and moderately tall (height = width).


Morphology remarks: Small (<6.5µm), short-cylindrical (quadriangular) nannoconids with moderately-wide central cavity (similar to, or slightly broader than, the wall).

Search data:
TagsLITHS: nannolith-radiate, circular, cylindrical, hollow, CA: vacant, T-UNITS: T-prominent,
MetricsLith size: 4->7.5µm;
Sources: original description +/-1µm
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Campanian Stage (72.05-83.64Ma, top in Campanian stage). Data source: Burnett 1998
First occurrence (base): within Hauterivian Stage (130.77-133.88Ma, base in Hauterivian stage). Data source: Burnett 1998

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: N. truitti group

    References:

    Bown, P. R. & Concheyro, A. (2004). Lower Cretaceous calcareous nannoplankton from the Neuquen Basin, Argentina. In, Villa, G. , Lees, J. A. & Bown, P. R. (eds) Calcareous Nannofossil Palaeoecology and Palaeocenographic Reconstructions, Proceedings of the INA9 conference, Parma 2002. Marine Micropaleontology. 52(1-4): 51-84. gs :: ::

    Brönnimann, P. (1955). Microfossils incertae sedis from the Upper Jurassic and Lower Cretaceous of Cuba. Micropaleontology. 1(28-51): -. gs :: ::

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


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    Nannoconus minutus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-6-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10761 Go to Archive.is to create a permanent copy of this page - citation notes



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