Lithostromation reginum

Classification: Coccolithophores -> Nannolith families inc sed -> Lithostromationaceae -> Lithostromation -> Lithostromation reginum
Sister taxa: L. biconvexitas, L. operosum, L. perdurum, L. reginum, L. simplex, L. sp., T. martinii,


Citation: Lithostromation reginum (Stradner 1962) Bybell 1975
Rank: Species
Basionym: Marthasterites reginus Stradner 1962
Notes & discussion: Possibly a synonym of Imperiaster obscurus

Distinguishing features: 6 long free rays at two levels

Farinacci & Howe catalog pages: Marthasterites reginus *

Morphology remarks:

"This species has six long, slender rays arranged in the same pattern as the playing pieces for the children's game of jacks. There are six knobs at the termination of each ray. The surface is covered with circular depressions which are surrounded by hexagonal, knobby ridges. The perforations become more shallow and more oval toward the ray ends. L. reginum is similar to  Marthasterites spineus Shafik and Stradner, which is distinguished by its lack of terminal nodes and the presence of small projections on either side of each ray." [Bybell 1975]

See also: Imperiaster obscurus ;

Search data:
TagsLITHS: nannolith-radiate, star-shaped, CA: pores, V-UNITS: V-prominent, DETAILS: 1ou,
MetricsLith size: 0->0µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of Middle Eocene Sub-Epoch (100% up, 37.8Ma, in Bartonian stage). Data source: Bybell 1975
First occurrence (base): at top of Early Eocene Sub-Epoch (100% up, 47.8Ma, in Ypresian stage). Data source: Stradner 1962

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Lithostromation


    Bybell, L. (1975). Middle Eocene calcareous nannofossils at Little Stave Creek, Alabama. Tulane Studies in Geology and Paleontology. 11(4): 177-247. gs :: view :: open

    Stradner, H. (1962). Über neue und wenig bekannte Nannofossilien aus Kreide und Alttertiär. Verhandlungen der Geologischen Bundesanstalt (Wien). 2: 363-377. gs :: ::


    Lithostromation reginum compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-7-2020

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    Short stable page link: Go to to create a permanent copy of this page - citation notes

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