Heterosestrum


Classification: rads_cenozoic -> Coccodiscidae -> Heterosestrum
Sister taxa: Cypassis, Diartus, Didymocyrtis, Heterosestrum, Lithocyclia, Periphaena, Phacodiscus, Sethodiscus, Spongoliva, Stylocyclia, Trigonocyclia,
Daughter taxa: (blue => in age window 0-800Ma)

neptune records: 1

neptune records:

Taxonomy

Citation: Heterosestrum Clark and Campbell 1945
Rank: genus
Basionym: Heterosestrum
Notes & discussion: Has been assigned to Actinommidae, here assigned to Coccodiscidae following new classification being developed by Suzuki & co-workers

Catalog entries: Heterosestrum

Original description: Heliosestrinae with double medullary shell and with 6 (rarely fewer) solid regularly disposed radial spines on the margin of the disc.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of Chattian Stage (100% up, 23Ma, in Chattian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Danian Stage (0% up, 66Ma, in Danian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Clark, B. L. & Campbell, A. S. (1945). Radiolaria from the Kreyenhangen Formation near Los Banos, California. Geological Society of America, Memoir. 1-66. gs


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Heterosestrum compiled by the radiolaria@mikrotax project team viewed: 28-9-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=204274 Go to Archive.is to create a permanent copy of this page - citation notes



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