radiolaria - rads_cenozoic - Trigonocyclia 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:


Citation: Trigonocyclia Haeckel 1887
taxonomic 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


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of Paleogene Period (100% up, 23Ma, in Aquitanian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:


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 years 1873-1876. 18: 1-1803. gs O


Trigonocyclia compiled by the radiolaria@mikrotax project team viewed: 15-4-2024

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