Distinguishing features:
Parent taxon (Rhagodiscus): Loxolith coccoliths with low rim and central-area filled by a granular plate which may be perforate and/or spine-bearing. In xpl the rim is unicyclic moderately bright, the central area is granular, lacking a clear extinction cross.
This taxon: Medium sized, with wide rim and no spine, weakly asymmetric
| LITHS: murolith, elliptical, CA: plate, CROSS-POLARS: rim-unicyclic, R-prominent, |
| Lith size: 6->7µm; Data source notes: original description & illustrated specimens |
Geological Range:
Last occurrence (top): within Hauterivian Stage (126.50-132.60Ma, top in Hauterivian stage). Data source: Original description
First occurrence (base): within Hauterivian Stage (126.50-132.60Ma, base in Hauterivian stage). Data source: Original description
Plot of occurrence data:
Black, M. (1971a). Coccoliths of the Speeton Clay and Sutterby Marl. Proceedings of the Yorkshire Geological Society. 38: 381-424. gs De Kaenel, E., Mojon, P. -O. & Pictet, A. (2020). New biostratigraphical data (calcareous nannofossils, ammonites) and Early to Late Barremian transition in the Urgonien Jaune facies and Marnes de la Russille complex of the Swiss Jura Mountains. Swiss Journal of Palaeontology. 139(6): 1-43. gs O Wind, F. H. & Cepek, P. (1979). Lower Cretaceous calcareous nannoplankton from DSDP Hole 397A (northwest African Margin). Initial Reports of the Deep Sea Drilling Project. 47A: 221-235. gs References:

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Rhagodiscus eboracensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-10-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11020 Go to Archive.is to create a permanent copy of this page - citation notes |
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