CATALOG OF ORIGINAL DESCRIPTIONS: Sethopyramis trapezoides 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 -> Sethopyramis -> Sethopyramis trapezoides
Other pages this level: S. acuticephala, S. akanthodes akanthodes, S. akanthodes leptopleura, S. aneotos, S. bicornis, S. cyclomma, S. dodecalactis, S. enneactis, S. fenestrata, S. hexagonalis, S. hexalactis, S. lucerna, S. magnifica, S. maxima, S. pulcherrima, S. quadrata [sec. junior hom], S. scalariformis, S. septimoangularis, S. spinosa, S. trapezoides, S. victori

Sethopyramis trapezoides

Citation: Sethopyramis trapezoides Haeckel 1887
Rank: species
Type locality: LM34
Type age (chronostrat): [presumably Quaternary]
Type repository: No information given
Described on page(s) : p.1254

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Current identification:

Original Description
Shell smooth, broadly pyramidal. Cephalis large, ovate, hyaline, without pores; its collar septum exhibits distinctly the four collar pores (two larger cardinal and two smaller jugular pores). Thorax broad, pyramidal, with slightly concave lateral outlines and nine (sometimes eight or ten) curved ribs, which are connected by eighteen to twenty-four complete transverse rings. The large meshes, so produced, have the form of a parallel trapezoid, and are in the eighth transverse row three times as broad as long. (Differs from Bathropyramis trapezoides, Pl. 54, fig. 3, mainly by the possession of a well developed cephalis).

Size: Cephalis 0.04 long, 0.03 broad; thorax (with eighteen rings) 0.32 long, 0.24 broad.

Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Sethopyramis trapezoides under the subgeneric name Cephalopyramis, 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


Sethopyramis trapezoides compiled by the radiolaria@mikrotax project team viewed: 11-4-2021

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