Nannotax3 - ntax_main - Tintinnabuliformis Nannotax3 - ntax_main - Tintinnabuliformis

Tintinnabuliformis


Classification: ntax_main -> Nannolith families inc sed -> Lapideacassaceae -> Tintinnabuliformis
Sister taxa: Lapideacassis, Tintinnabuliformis

Daughter taxa (time control age-window is: 0-800Ma)
Tintinnabuliformis bicornus
Species of Tintinnabuliformis with two horns
Tintinnabuliformis unicorn
Species of Tintinnabuliformis with one horn
Tintinnabuliformis sp.


Taxonomy:
Citation: Tintinnabuliformis Varol 1991
Taxonomic rank: genus
Type species: Tintinnabuliformis unicorn Varol 1991
Taxonomic discussion: Possibly a junior synonym of Lapideacassis but Varol (1991) argued this was unlikely since it does not appear to have a tiered wall, SEM observations are needed to confirm this - or more detailed LM observations. Also Lapideacassis has not previously been recorded later than the Eocene. As a compromise we keep the genus but tentatively include it in the Lapideacassaceae [JRY 2015]

Synonyms:

Distinguishing features:
Parent taxon (Lapideacassaceae): Hemispherical to cylindrical nannoliths, with walls constructed from one to several cycles of thin elements, enclosing a hollow central space; the nannolith tapers distally, and may have long apical spines or processes.
This taxon: Bell shaped nannofossil with basal flange and apical horn(s), formed of single cycle of elements

Search data:
LITHS: nannolith-radiate, circular, cylindrical, hollow, CROSS-POLARS: R-prominent,
Lith size: 5->8µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of NN7 zone (100% up, 10.9Ma, in Tortonian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within NN6 zone (11.90-13.53Ma, base in Serravallian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

Varol, O. (1991). New Cretaceous and Tertiary Calcareous Nannofossils. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 182: 211-237. gs


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Tintinnabuliformis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-9-2026

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1410 Go to Archive.is to create a permanent copy of this page - citation notes



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