Nannotax3 - ntax_main - Mesozoic Calcispheres inc sed Nannotax3 - ntax_main - Mesozoic Calcispheres inc sed

Mesozoic Calcispheres inc sed


Classification: ntax_main -> Mesozoic nannofossils -> Mesozoic Calcispheres inc sed
Sister taxa: Arkhangelskiales, Eiffellithales, Stephanolithiales, Podorhabdales, Watznaueriales, Mesozoic Heterococcoliths inc sedis ⟩⟨ Mesozoic Holococcoliths, Mesozoic nannoliths inc sedis, Mesozoic Calcispheres inc sed

Daughter taxa (time control age-window is: 0-800Ma)Granddaughter taxa
Schizosphaerellaceae
Large globular test with two interlocking sub-hemispherical valves formed from a geometric arrangement of equidimensional crystallites.
Schizosphaerella

Prinsiosphaera
Spherical, solid nannolith formed from stacked groups of calcite plates.
Prinsiosphaera triassica
Prinsiosphaera sp.

Carnicalyxia

Carnicalyxia tabellata
Carnicalyxia sp.

Cassianospica

Cassianospica curvata
Cassianospica sp.

Taxonomy:

Taxonomic rank: informal group of genera
Taxonomic discussion: Most non-coccoliths are included in the non-coccoliths module ("Other groups" item in the menubar), these taxa are included here, however, since they are very characteristic parts of early Mesozoic nannofossil assemblages.

Distinguishing features:
Parent taxon (Mesozoic nannofossils): Predominantly Mesozoic nannofossils - except for Braarudosphaerales
This taxon: Calcispheres and other non-coccoliths found in nannofossil preps. Some taxa previously placed here have been moved to the calcareous dinoflagellates pages [Feb 2017]. 

Farinacci & Howe catalog pages: Mesozoic non–coccoliths [no catalog entry yet]

Search data:
Lith size: 0->0µm;
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 Kimmeridgian Stage (100% up, 149.2Ma, in Tithonian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Carnian Stage (227.30-237.00Ma, base in Carnian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

Missing or ambiguous references: ; ;


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Mesozoic Calcispheres inc sed compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-7-2025

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10650 Go to Archive.is to create a permanent copy of this page - citation notes



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