Classification: rads_cenozoic -> Pterocorythidae -> Phormocyrtis
Sister taxa: Anthocyrtidium, Calocycletta, Lamprocyclas, Lamprocyrtis, Phormocyrtis, Podocyrtis, Pterocorys, Pterocorythidae inc sed, Tetracorethra, Theocorythium, Theocyrtis,
Daughter taxa: (blue => in age window 0-800Ma) Granddaughter taxa

neptune records: 216

neptune records: 65

neptune records: 53

neptune records: 3

neptune records:

neptune records: 6

neptune records: 58

neptune records: 3


Citation: Phormocyrtis Haeckel 1887
Rank: genus
Basionym: Phormocyrtis

Catalog entries: Phormocyrtis

Original description: Theophormida (vel Tricyrtida multiradiata aperta) with numerous radial ribs enclosed in the wall of the thorax, and of the ovate or cylindrical abdomen; mouth of the latter constricted.


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:


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


Phormocyrtis compiled by the radiolaria@mikrotax project team viewed: 1-10-2020

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