Trigonocyclia


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

neptune records:

neptune records:

Taxonomy

Citation: Trigonocyclia Haeckel 1887
Rank: genus
Basionym: Trigonocyclia

Catalog entries: Trigonocyclia

Original description: Coccodiscida with three solid radial spines on the margin of the circular disk. Medullary shell simple.

The genus Trigonocyclia (only known by one single species, once observed) bears on the margin of the chambered disk three solid radial spines, at equal distances one from another. It corresponds to the genus Tripodictya amongst the Porodiscida.
Remarks on original description: Junior objective synonym of Tripodydlia Haeckel, 1881a

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:

Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gs


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Trigonocyclia compiled by the radiolaria@mikrotax project team viewed: 24-9-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=205935 Go to Archive.is to create a permanent copy of this page - citation notes



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