CATALOG OF ORIGINAL DESCRIPTIONS: Trigonactura trigonobrachia 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 trigonobrachia
Other pages this level: T. angusta, T. lanceolata, T. rhopalastrella, T. triacantha, T. trigonobrachia, T. trigonodiscus, T. trixiphos

Trigonactura trigonobrachia

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

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Current identification:

Original Description
Phacoid shell two and a half times as broad as the medullary shell, with six pores on its radius, without a perfect chambered girdle. Arms nearly equilateral triangular, twice as long as the diameter of the phacoid shell, at the truncated distal end as broad as its diameter and three times as broad as at the narrow base.

Diameter of the phacoid shell 110µm, of the medullary shell 45µm; length of the arms 200µm, basal breadth 35µm, distal breadth 100µm. Distinguishing characters (rw): Resembles Hymenactura hexagona, but without a patagium.

Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Trigonactura trigonobrachia under the subgeneric name Trigonacturium, but did not include the subgeneric name in the species name.


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

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