radiolaria - rads_cenozoic

Trigonocyclia

Classification: rads_cenozoic -> Coccodiscidae -> Trigonocyclia
Sister taxa: Cypassis, Diartus, Didymocyrtis, Heterosestrum, Lithocyclia, Periphaena, Phacodiscus, Sethodiscus, Spongoliva, Stylocyclia, Trigonocyclia

Daughter taxa (time control age-window is: 0-800Ma)
				Trigonocyclia prima neptune records:
				Trigonocyclia sp. 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:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Coccodiscidae

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

Trigonocyclia compiled by the radiolaria@mikrotax project team viewed: 1-3-2021

Taxon Search:

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Short stable page link: https://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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