Eprolithus


Classification: Mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Eprolithus
Sister taxa: Eprolithus, Radiolithus, Farhania, Lithastrinus, Uniplanarius, Quadrum, Micula, Palaeomicula,

Distinguishing features: 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.


Daughter taxa: (blue => in age window 0-800Ma)
Eprolithus with six wall-elements.
Eprolithus with seven wall-elements
Eprolithus with eight wall-elements.
Eprolithus with nine wall-elements.
Eprolithus with nine wall-elements and tall wall
Circular eprolithid nannolith with narrow wall, wide diaphragm and relatively large central perforation. 
Specimens not identified to species level

Taxonomy:

Citation: Eprolithus Stover, 1966
Rank: Genus
Type species: Lithastrinus floralis Stradner, 1962, designated by Stover (1966).
Synonyms: Polycyclolithus Forchheimer, 1968

Farinacci & Howe catalog pages: Eprolithus * , Polycyclolithus + *

Distinguishing features: 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.

Geological Range:
Last occurrence (top): at top of Campanian Stage (100% up, 72.1Ma, in Campanian stage). Data source: Total of range of species in this database
First occurrence (base): within Hauterivian Stage (130.77-133.88Ma, base in Hauterivian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Early Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 86-131. gs

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs

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: 133-167. gs


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Eprolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-10-2019

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Short stable page link: http://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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