Nannoconus wintereri


Classification: Mesozoic -> Braarudosphaerales -> Nannoconaceae -> Nannoconus -> N. kamptneri group -> Nannoconus wintereri
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: Pear-shaped with bulbous base


Taxonomy:

Citation: Nannoconus wintereri Bralower & Thierstein, in Bralower et al. 1989
Rank: Species

Farinacci & Howe catalog pages: Nannoconus wintereri *

Distinguishing features: Pear-shaped with bulbous base


Morphology remarks: Medium-sized (4-8µm in height), pear-shaped to tapering nannoconids with cavity and walls of similar width.

Geological Range:
Last occurrence (top): within Early Berriasian Substage (143.57-145.01Ma, top in Berriasian stage). Data source: Bralower et al., 1989
First occurrence (base): at base of NJT17b subzone (0% up, 145.5Ma, in Tithonian stage). Data source: Casellato 2010, fig16 - zonal marker

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:

    Bralower, T. J., Monechi, S. & Thierstein, H. R. (1989). Calcareous nannofossil zonation of the Jurassic-Cretaceous boundary interval and correlation with the geomagnetic polarity timescale. Marine Micropaleontology. 14: 153-235. gs

    Casellato, C. E. (2010). Calcareous nannofossil biostratigraphy of Upper Callovian - Lower Berriasian successions from the Souhern Alps, North Italy. Rivista Italiana di Paleontologia e Stratigrafia. 116(3): 357-404. gs

    Varol, O. & Bowman, A. R. (2019). Taxonomic revision of selected Late Jurassic (Tithonian) calcareous nannofossils and the application of mobile mounting. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen. 291: 65-87. gs


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    Nannoconus wintereri compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-12-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10786 Go to Archive.is to create a permanent copy of this page - citation notes



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