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Current identification:
Original Description
Sethophormida (vel Dicyrtida multiradiata aperta) with numerous curved ribs in the wall of the ovate thorax, the small mouth of which is constricted. Cephalis without horn.
Etymology: From the Greek sethamphora = sieve-pitcher"
Extra details from original publication
The genus Sethamphora differs from the preceding Sethophormis, and from the next following ribbed Sethophormida, mainly in the small, more or less constricted mouth; therefore the thorax is more or less ovate, and its ribs curved, with the convexity external. Sethophormis [Sethamphora] may be divided into two different subgenera, Dictyoprora [Dictyoprona] and Cryptocephalus; in the former the cephalis is perfectly free and well developed, in the latter it is more or less hidden in the uppermost part of the thorax (like Carpocanium).
[It may seem, in accordance with ICZN (1961) art. 23(e,i), that this genus should have been called Cryptocephalus Haeckel 1881a, since here in 1887a Haeckel treats Cryptocephalus as a subgenus of Sethamphora and the other subgeneric name used is of a later date. However, this seems inappropriate, since the type species of Cryptocephalus (by subsequent montypy, C. exiguus Rüst, 1885) is not included here in Sethamphora at the time of its generic definition.
Synonymized with Cystophormis Haeckel by Petrushevskaya, 1975c]
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 year 1873-1876, Zoology. 18: 1-1803. gsReferences:
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Sethamphora compiled by the radiolaria@mikrotax project team viewed: 13-4-2021
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