CATALOG OF ORIGINAL DESCRIPTIONS: Litharachnium discoides 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 -> L -> Litharachnium -> Litharachnium discoides
Other pages this level: L. araneosum, L. discoides, L. epeira, L. permagnum, L. pilidium, L. tentorium

Litharachnium discoides

Citation: Litharachnium discoides Haeckel 1887
Rank: species
Type repository: No information given
Described on page(s) : p.1164
Family (traditional): Theoperidae
Family (modern): Acropyramiidae

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Current identification:

Original Description
Shell flat, funnel-shaped, nearly discoidal, with concave outlines. Apex with four unequal cortinar pores (two smaller jugular and two larger cardinal pores). Twelve strong primary or perradial ribs alternating with twelve weaker secondary or interradial ribs; between these there are twenty-four shorter tertiary or adradial ribs, and in the outer flat, discoidal, half of the shell very numerous peripheral radial ribs (more than two hundred to three hundred). Margin flat, discoidal.

Shell about 0.2 long, 1.12 broad.

Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Litharachnium discoides under the subgeneric name Litharachnoma, but did not include the subgeneric name in 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


Litharachnium discoides compiled by the radiolaria@mikrotax project team viewed: 17-5-2021

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