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. | |||||
| Prinsiosphaera Spherical, solid nannolith formed from stacked groups of calcite plates. | |||||
| Carnicalyxia | |||||
| Cassianospica | |||||
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]
| Lith size: 0->0µm; |
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 Early Triassic Epoch (246.70-251.90Ma, base in Induan stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Missing or ambiguous references: ; ; References:

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Mesozoic Calcispheres inc sed compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-5-2026
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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