radiolaria - rads_cat - Heliodiscus charlestonensis radiolaria - rads_cat - Heliodiscus charlestonensis

CATALOG OF ORIGINAL DESCRIPTIONS: Heliodiscus charlestonensis Clark & Campbell 1945

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.

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Heliodiscus charlestonensis

Citation: Heliodiscus charlestonensis Clark & Campbell 1945
taxonomic rank: species
Described on page(s) : p.23
Type specimens: pl.3, fig.10
Type locality: LL598

Current identification:

Original Description

Phacoid shell having 14 short (possibly about the same length as the radius of the shell), generally triangular, very stout, marginal rays, these rays more or less regularly disposed, and similar in form with more or less blunted blades, with slight flared bases without basal riblets; equatorial girdle scarcely more than a continuous rim around the margin of the shell connected with the rays and, like them, hyaline; globular medullary shell small (0.3 diameter of cortical shell); supporting radial beams rodlike and apparently few in number; pores of cortical shell regularly and similarly circular, widely spaced, and few in number (not over 8 in a radius).

Diameter of phacoid shell 130µm, of medullary shell 38.6µm, of cortical pores 4.4µm; maximum length of rays 47.4µm. Our single photographed specimen was tipped on one side so that the measurements are somewhat distorted.

No information given

Editors' Notes
The authors here list Heliodiscus charlestonensis under the subgeneric name Heliodiscomma and include the subgeneric name in the species name.[comment from RadWorld database]


Clark, B. L. & Campbell, A. S. (1945b). Radiolaria from the Kreyenhangen Formation near Los Banos, California. Geological Society of America, Memoir. 1-66. gs


Heliodiscus charlestonensis compiled by the radiolaria@mikrotax project team viewed: 19-6-2024

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