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

Trigonactura triacantha

Citation: Trigonactura triacantha Haeckel 1887
Rank: species
Type locality: LM17
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type specimens: pl.38, fig.6; fig.7
Type repository: No information given
Described on page(s) : p.472

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Current identification:

Original Description
Phacoid shell two and a half times as broad as the medullary shell, with eight pores on its radius, surrounded by one perfect chambered ring. Arms nearly lanceolate, in the middle part one and a half times as broad as at both ends, twice as long as the phacoid shell, at the distal end with a strong pyramidal terminal spine. Through the spongy framework of each arm shine sixteen to eighteen transverse bars (as septa of the joints) and six to eight longitudinal piercing beams.

Size: Diameter of the phacoid shell 0.09, of the medullary shell 0.038; length of the arms 0.2, greatest breadth 0.08.

Editors' Notes
Haeckel listed Trigonactura triacantha under the subgeneric name Trigonactinium, but did not include the subgeneric name in the species name.[comment from RadWorld database]


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

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