CATALOG OF ORIGINAL DESCRIPTIONS: Amphirhopalum ypsilon 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 -> A -> Amphirhopalum -> Amphirhopalum ypsilon
Other pages this level: A. amphidicranum, A. bifidum, A. bigeminum, A. echinatum, A. omalocladum, A. praeypsilon, A. ximorphum, A. ypsilon

Amphirhopalum ypsilon

Citation: Amphirhopalum ypsilon Haeckel 1887
Rank: species
Type repository: No information given
Described on page(s) : p.522
Family (traditional): Spongodiscidae
Family (modern): Euchitoniidae

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Current identification/main database link: Amphirhopalum ypsilon Haeckel 1887

Original Description
Both arms very different. Larger arm simple, egg-shaped, twice as long as broad; smaller arm in the basal half simple, nearly square, in the distal half forked; both branches egg-shaped, blunt. (Resembles Amphicraspedum wyvilleanul Pl. 45, fig. 12, but wants the patagium.)

Radius of the larger simple arm 180µm, breadth 90µm; radius of the smaller forked arm 150µm, breadth of its branches 50µm.

Editors' Notes
[For Amphirrhopalum read Amphirhopalum. For Amphirrhopoma read Amphirhopoma.
Haeckel listed Amphirhopalum ypsilon under the subgeneric name Amphirhopoma, but did not include the subgeneric name the species name.


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

Nigrini, C. A. (1967). Radiolaria in pelagic sediments from the Indian and Atlantic Oceans. Bulletin of the Scripps Institution of Oceanography. 11: 1-125. gs


Amphirhopalum ypsilon compiled by the radiolaria@mikrotax project team viewed: 4-3-2021

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