CATALOG OF ORIGINAL DESCRIPTIONS: Sethophormis triloba 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 -> S -> Sethophormis -> Sethophormis triloba
Other pages this level: S. arachnium, S. asteriscus, S. astrodiscus, S. aurelia, S. cruciata, S. dodecaster, S. enneactis, S. enneastrum, S. eupilium, S. floscula, S. hexagonalis, S. hexalactis, S. leptopilium, S. leptoscenium, S. medusa, S. octalactis, S. pentalactis, S. rotula, S. triloba, S. umbrella

Sethophormis triloba

Citation: Sethophormis triloba Haeckel 1887
Rank: species
Type locality: LM12
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type repository: No information given
Described on page(s) : p.1246

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Current identification:

Original Description
Cephalis large, hemispherical, distinctly trilobed, with dense, irregular, polygonal network. From the centre of its top diverge three stout arches or semilunar rods, which are curved downwards, and unite with the three horizontal, radial beams of the collar-septum inside the collar-ring. These three parietal arches of the cephalis are much stronger than in the similar preceding species (Pl. 57, fig. 9), and between them are placed three vaulted bosoms of the cephalis. The collar-ring and the thorax are of the same form as in the preceding, but possess only four concentric, nine-angled rings.

Size: Cephalis 50µm long, 80µm broad; thorax 240µm diameter.

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

[The \similar preceding species\" refers to Sethophormis rotula Haeckel, 1887a.]"[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


Sethophormis triloba compiled by the radiolaria@mikrotax project team viewed: 19-4-2021

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