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CATALOG OF ORIGINAL DESCRIPTIONS: Prismatium tripodium 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 -> P -> Prismatium -> Prismatium tripodium
Other pages this level: P. tripleurum, P. tripodium

Prismatium tripodium

Citation: Prismatium tripodium Haeckel 1887
Taxonomic rank: species
Described on page(s) : p.1009
Type specimens: pl.93, fig.22
Type repository: No information given
Family (traditional): not-known

Current identification:


Original Description

Mitral ring triangular, somewhat smaller than the triangular basal ring, both connected at the corners by three vertical, slightly curved columellae. From the six corners arise six radial spines of different size and form; the two paired spines of the mitral ring are simple and very small, whilst those of the basal ring are three times as long and bear a lateral branch. The odd spine of the third corner is on both rings larger, and distinguished by some thorns. This difference seems to indicate that these two odd spines correspond to the apical horn and the caudal foot of Cortina, and the columella between them is the rest of the reduced sagittal ring. In this case the quadrangular vertical ring, which is composed of the two paired columellae and the two connecting horizontal rods, would be probably the frontal ring.

Length of the shell 0.09, breadth 0.07. [dimensions in mm]

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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Prismatium tripodium compiled by the radiolaria@mikrotax project team viewed: 15-7-2025

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