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radiolaria - rads_cat - Circotympanum octogonium radiolaria - rads_cat - Circotympanum octogonium

CATALOG OF ORIGINAL DESCRIPTIONS: Circotympanum octogonium 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 -> C -> Circotympanum -> Circotympanum octogonium
Other pages this level: C. decagonium, C. hexagonium, C. octogonium

Circotympanum octogonium

Citation: Circotympanum octogonium Haeckel 1887
Taxonomic rank: species
Described on page(s) : p.1013
Type specimens: pl.94, fig.17
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type locality: LM25
Type repository: No information given

Current identification:


Original Description

Mitral and basal rings octagonal, the latter one and a half times as broad as the former. Eight columellae slightly curved, thorny. The mitral ring bears on each corner a short ascending spine, the basal ring a larger, thorny, obliquely descending spine, which has some recurved thorns on the upper edge. All rods more or less thorny.

Size:
Breadth of the mitral ring 0.06, of the basal ring 0.09.

Editors' Notes
It is clear from the family discussion of Tympanida (p.987-990) that Haeckel meant to assign the following key to the letters in his illustration: s = horizontal basal ring; m = horizontal mitral ring.[comment from RadWorld database]

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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Circotympanum octogonium compiled by the radiolaria@mikrotax project team viewed: 17-3-2025

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=261017 Go to Archive.is to create a permanent copy of this page - citation notes



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