radiolaria - rads_cat - Circotympanum radiolaria - rads_cat - Circotympanum

CATALOG OF ORIGINAL DESCRIPTIONS: Circotympanum 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
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not figuredCircotympanum decagonium Haeckel 1887

not figuredCircotympanum hexagonium Haeckel 1887

Circotympanum octogonium Haeckel 1887

Circotympanum

Citation: Circotympanum Haeckel 1887
taxonomic rank: genus
Type species: Circotympanum hexagonium Haeckel 1887 [designated by Campbell,1954, p.D110]
Described on page(s) : 1012

Current identification:


Original Description

Tympanida with two simple different horizontal rings, connected by numerous (six to eight or more) divergent columellae.

Etymology:
and a lower larger "basal ring") are connected by a variable number of divergent rods or columellae (at least six or eight). Circotympanum is probably derived from Tympaniscus or Tympanidium by partial reduction of the sagittal ring, the upper (apical) a

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 compiled by the radiolaria@mikrotax project team viewed: 21-6-2024

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