radiolaria - rads_cat - Tristephanium dimensivum radiolaria - rads_cat - Tristephanium dimensivum

CATALOG OF ORIGINAL DESCRIPTIONS: Tristephanium dimensivum 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 -> Tristephanium -> Tristephanium dimensivum
Other pages this level: T. dimensivum, T. octopyle, T. quadricorne

Tristephanium dimensivum

Citation: Tristephanium dimensivum Haeckel 1887
Taxonomic rank: species
Described on page(s) : p.983
Type specimens: pl.93, fig.9
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type locality: LM11
Type repository: No information given

Current identification:


Original Description

Sagittal ring ovate, with a large thorny apical horn, smaller than the two other rings. Frontal ring violin-shaped, with a deep sagittal constriction. Basal ring also violin-shaped, in the sagittal axis constricted. Its four gates (two jugular and two cardinal) of nearly equal size. All three rings angular, armed with scattered, stout, thorny spines, which are larger in the basal half.

Size:
Height of the frontal ring 80µm, breadth 120µm.

Editors' Notes
Haeckel listed Tristephanium dimensivum under the subgeneric name Triostephus, but did not include the subgeneric name in the species name.[comment from RadWorld database]

References:

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 years 1873-1876. 18: 1-1803. gs O


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Tristephanium dimensivum compiled by the radiolaria@mikrotax project team viewed: 17-6-2026

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=262369 Go to Archive.is to create a permanent copy of this page - citation notes



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