Daughter taxa (time control age-window is: 0-800Ma)![]() | Granddaughter taxa | ||||
| Common genera The four most commonly recorded genera | |||||
| Rarer genera Less common genera | Bifidalithus Bilapillus Munarinus Okkolithus Ottavianus Pharus Ramsaya Russellia Saepiovirgata Acuturris Anfractus Duocameratus Lacunolithus Bown Metadoga Nicholasia Paulpearsonia Petrobrasiella Pseudoconus Stereorhabdus Tanzanella Thecatus unidentified holococcoliths | ||||
Distinguishing features:
Parent taxon (Mesozoic nannofossils): Predominantly Mesozoic nannofossils - except for Braarudosphaerales
This taxon: Coccoliths formed of minute (ca 0.1µm) rhombohedral micro-crystals. Often a life-cycle stage with heterococcolith counterpart(s).
| Lith size: 0->0µm; |
Geological Range:
Last occurrence (top): at top of Late Maastrichtian Substage (100% up, 66Ma, in Danian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Toarcian Stage (174.70-184.20Ma, base in Toarcian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research. S1: 1-132. gs References:

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Mesozoic Holococcoliths compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-9-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10534 Go to Archive.is to create a permanent copy of this page - citation notes |
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