Nannoconus wassallii


Classification: Mesozoic -> Braarudosphaerales -> Nannoconaceae -> Nannoconus -> N. kamptneri group -> Nannoconus wassallii
Sister taxa: N. aquitanicus, N. boletus, N. bonetii, N. bronnimannii, N. bucheri, N. calpidomorphus, N. colomii, N. dauvillieri, N. dislocatus, N. globulus, N. kamptneri, N. oviformis, N. vocontiensis, N. wassallii, N. wintereri,

Distinguishing features: Broad, pear-shaped, slightly higher than wide with bulbous base.


Taxonomy:

Citation: Nannoconus wassallii Brönnimann, 1955
Rank: Species
Basionym: Nannoconus wassalli Brönnimann, 1955
Notes & discussion: Arguably a variant or junior synonym of Nannoconus bucheri Brönnimann, 1955.

Farinacci & Howe catalog pages: Nannoconus wassalli *

Distinguishing features: Broad, pear-shaped, slightly higher than wide with bulbous base.


Morphology remarks: Pear-shaped nannoconids with wide central cavities and thick walls. The cavity is two to four times the width of the wall.

Geological Range:
Last occurrence (top): within Aptian Stage (112.95-126.30Ma, top in Aptian stage). Data source: Perch-Nielsen 1985a
First occurrence (base): within Barremian Stage (126.30-130.77Ma, base in Barremian stage). Data source: Perch-Nielsen 1985a

Plot of occurrence data:

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

    References:

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


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    Nannoconus wassallii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 9-12-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10785 Go to Archive.is to create a permanent copy of this page - citation notes



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