This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Higher levels: rads_cat -> T -> Triodiscus
Other pages this level: << < Tricolocampe, Tricolocapsa, Tricolospyris, Tricolpera, Tricorporisphaera, Tricranastrum, Tricyclidium, Tridictyopus, Trigonactura, Trigonastrum, Trigonocyclia, Trilampterium, Trilobatum, Trimanicula, Trimiduca, Triodiscus, Triolena, Triopyle, Triospyris, Triospyrium, Triostephus, Tripilidium, Triplagia, Triplagiacantha, Triplecta, Tripleurium, Tripocalpis, Tripocyclia, Tripocyrtis, Tripodictya, Tripodiscinus> >>

not figuredTriodiscus lenticula Haeckel 1887

Triodiscus spinosus Haeckel 1887

not figuredTriodiscus trigonus Haeckel 1887

Triodiscus variabilis Popofsky 1908


Citation: Triodiscus Haeckel 1887
Rank: genus
Type species: Triodiscus spinosus Haeckel 1887 [designated by Campbell,1954, p.D92]
Described on page(s) : 566
Family (traditional): Pyloniidae

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Current identification:

Original Description
Pylodiscida with a simple, spherical or lenticular, central chamber, surrounded by three simple arm-chambers. Notches between the three arms closed by lattice-work and by an equatorial girdle.

The genus Triodiscus differs from the preceding Triopyle in the development of loose lattice-work on both sides of the discoidal shell. This network closes the gates and transforms the whole shell into a fenestrated lens. The singular species of Triodiscus correspond to certain species of Triopyle.


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


Triodiscus compiled by the radiolaria@mikrotax project team viewed: 19-4-2021

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