radiolaria - rads_cat - Sethoconus radiolaria - rads_cat - Sethoconus


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 -> Sethoconus
Other pages this level: << < Schizomma, Sciadiocapsa, Sciadiopeplus, Semantidium, Semantis, Semantiscus, Semantrum, Sepalospyris, Sertiseria, Sestropodium, Sestrornithium, Sethamphora, Sethocapsa, Sethocephalus, Sethochytris, Sethoconus, Sethocorys, Sethocyrtis, Sethodiscus, Sethodrepanum, Sethomelissa, Sethomelissa [Homonym], Sethopera, Sethoperidium, Sethophaena, Sethophatna, Sethophormis, Sethopilium, Sethopyramis, Sethornithium, Sethosphaera> >>

Sethoconus anthocyrtis Haeckel 1887

Sethoconus bimarginatus Haeckel 1887

Sethoconus conicus Popofsky 1908

Sethoconus crinitus Cleve 1900

Sethoconus dogieli Petrushevskaya 1967
= Gondwanaria dogieli
Sethoconus facetus Haeckel 1887
= Conarachnium facetum
Sethoconus galea Cleve 1899

not figuredSethoconus hexagonalis Haeckel 1887

Sethoconus hyalinus Popofsky 1913

not figuredSethoconus lophophaena Haeckel 1887

Sethoconus martini Campbell & Clark 1944

Sethoconus myxobrachia Strelkov & Reshetnyak 1959
= Sethoconus myxobrachia
not figuredSethoconus orthoceras Haeckel 1887

Sethoconus parvus Gorbunov 1977

not figuredSethoconus pileus Haeckel 1887

Sethoconus rayianus Haeckel 1887

Sethoconus reschetnjakae Petrushevskaya 1967

not figuredSethoconus setosus Haeckel 1887

Sethoconus subtilis Carnevale 1908

Sethoconus venosus Haeckel 1887

not figuredSethoconus virgultus Haeckel 1887

Sethoconus woodfordi Campbell & Clark 1944

Sethoconus woodfordi advena Campbell & Clark 1944


Citation: Sethoconus Haeckel 1887
taxonomic rank: genus
Described on page(s) : 1290
Family (traditional): Theoperidae

Current identification/main database link: Sethoconus Haeckel 1887

Original Description

Sethocorida (vel Dicyrtida eradiata aperta) with conical or campanulate, gradually dilated thorax and wide open mouth. Cephalis with one or more horns.

From the Greek sethoconus = sieve-cone"

Extra details from original publication
The genus Sethoconus is the oldest and simplest form of the Sethocorida, or of those Dicyrtida in which the simple thorax bears no apophyses and has the mouth open and not closed by a basal lattice-plate. Probably all those eradiate Sethocorida have been derived either from triradiate Sethopilida (Lychnocanium), or from multiradiate Sethophormida (Sethophormis, Anthocyrtis ?) by loss of the radial ribs and feet. In Sethoconus the thorax is more or less conical, sometimes more campanulate, commonly smooth, in some species covered with spines. The cephalis is usually small, with rudimentary collar septum, at other times large, with distinct cortinar septum. Correspondingly, the genus may be divided into different groups, which here are enumerated as subgenera.

[Although Haeckel here refers to p.430 of his Prodromus of 1881a, there is no generic name on that or any other page of that reference related to the name Sethoconus. Therefore, since the name Sethoconus dates from 1887a and the three subgeneric names Conarachnium, Cornutellium and Phlebarachium date from 1881a, it appears that one of the latter three names must be treated as the nominate subgenus and replace Sethoconus. However, since the type species of Cornutellium (by subsequent monotypy, Cornutellium limbatum Rust, 1885) is not among those species included here in 1887a in Sethoconus, Cornutellium is not eligible, and the generic name must be either Conarachnium or Phlebarachnium.

Junior objective synonym of Conarachnium Haeckel, 1881a]
Sub-genera described:


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


Sethoconus compiled by the radiolaria@mikrotax project team viewed: 23-5-2024

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