Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
| Eprolithus rarus Eprolithus with six wall-elements. | ||||
| Eprolithus moratus Eprolithus with seven wall-elements | ||||
| Eprolithus octopetalus Eprolithus with eight wall-elements. | ||||
| Eprolithus floralis Eprolithus with nine wall-elements. | ||||
| Eprolithus apertior Eprolithus with nine wall-elements and tall wall | ||||
| Eprolithus antiquus Circular eprolithid nannolith with narrow wall, wide diaphragm and relatively large central perforation. | ||||
| Eprolithus sp. Specimens not identified to species level | ||||
Distinguishing features:
Parent taxon (Polycyclolithaceae): Nannoliths composed of two superposed wall cycles and a central-area which may be closed, open and vacant, or spanned by a diaphragm-like structure. Elements have tangential c-axis orientation.
This taxon: Moderately tall, circular to stellate, multiradiate nannoliths with 5-9 petaloid wall-cycle elements surrounding a wide central area spanned by a median diaphragm. Typically H-shaped in side view.
Farinacci & Howe catalog pages:
Eprolithus * , Polycyclolithus + *
| LITHS: nannolith-radiate, star-shaped, cylindrical, CA: vacant, closed, CROSS-POLARS: T-prominent, |
| Lith size: 3->9µm; Data source notes: size range of included species |
Geological Range:
Last occurrence (top): at top of Campanian Stage (100% up, 72.2Ma, in Campanian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within BC7 zone (131.54-132.40Ma, base in Hauterivian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Lower Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 86-131. gs O Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gs O Forchheimer, S. (1968). Die Coccolithen des Gault-Cenoman, Cenoman und Turon in der Bohrung Höllviken I, Süd-west-Schweden. Sveriges Geologiska Undersökning, Series C. #635, 62(6): 1-64. gs Stover, L. E. (1966). Cretaceous coccoliths and associated nannofossils from France and the Netherlands. Micropaleontology. 12(2): 133-167. gsReferences:

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Eprolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-7-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10431 Go to Archive.is to create a permanent copy of this page - citation notes |
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