CATALOG OF ORIGINAL DESCRIPTIONS: Trigonactura trigonodiscus Haeckel 1887

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 -> Trigonactura -> Trigonactura trigonodiscus
Other pages this level: T. angusta, T. lanceolata, T. rhopalastrella, T. triacantha, T. trigonobrachia, T. trigonodiscus, T. trixiphos

Trigonactura trigonodiscus

Citation: Trigonactura trigonodiscus Haeckel 1887
Rank: species
Type repository: No information given
Described on page(s) : p.472
Family (traditional): Coccodiscidae
Family (modern): Coccodiscidae

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Current identification:

Original Description
Phacoid shell triangular, twice as broad as the spherical medullary shell, with six to seven pores on its radius, surrounded by one chambered ring. Arms equilateral triangular, as long as the diameter of the central disk and at the base half as broad, slowly decreasing in breadth towards the distal end, which is armed with a strong pyramidal spine.

Diameter of the phacoid shell 100µm, of the medullary shell 50µm; length of the arms 120µm, basal breadth 70µm.

Editors' Notes
Haeckel listed Trigonactura trigonodiscus under the subgeneric name Trigonactinum, but did not include the subgeneric name in the species name.


Bury, P. S. (1862). Figures of remarkable forms of Polycystins, or allied organisms, in the Barbados chalk deposit. W. Wheldon, London. 1-25. gs

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


Trigonactura trigonodiscus compiled by the radiolaria@mikrotax project team viewed: 18-4-2021

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