Corollithion


Classification: Mesozoic -> Stephanolithiales -> Stephanolithiaceae -> Corollithion
Sister taxa: Corollithion, Cylindralithus, Darwinilithus, Paralithella, Rectocorona, Rhombolithion, Rotelapillus, Stephanolithion, Stoverius, Stradnerlithus, Thurmannolithion, Truncatoscaphus,

Distinguishing features: Polygonal, usually hexagonal; rim bicyclic; central area with 4-6 radial bars


Daughter taxa: (blue => in age window 0-800Ma)
Hexagonal species
Roughly hexagonal; central area filled by a plate of multiple elements
Hexagonal; central area with 6 radial bars.
Hexagonal, small, dark; central area filled by plate of 6 elements
Nearly square to subhexagonal; central area with broad axial cross.
Hexagonal; central area with axial cross.
Elliptical species
Elliptical; central area nearly filled by sub-axial cross
Elliptical; central area with diagonal cross
Elliptical; central area with axial cross and diamond-shaped central structure
Specimens not identified to species level

Taxonomy:

Citation: Corollithion Stradner, 1961
Rank: Genus
Type species: Corollithion exiguum Stradner, 1961

Farinacci & Howe catalog pages: Corollithion *

Distinguishing features: Polygonal, usually hexagonal; rim bicyclic; central area with 4-6 radial bars

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Valanginian Stage (133.88-139.39Ma, base in Valanginian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Burnett, J.A., (1998). Upper Cretaceous. In: Bown, P.R. (Editor), Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publications Series. Chapman & Hall, London, pp. 132-199.GS

Stradner, H., (1961). Vorkommen von Nannofossilien im Mesozoikum und Alttertiär. Erdöl-Zeitschrift, 77(3): 77-88.GS


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Corollithion compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-3-2019

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10276 Go to Archive.is to create a permanent copy of this page - citation notes



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