CATALOG OF ORIGINAL DESCRIPTIONS: Gorgospyris hemisphaerica Clark & Campbell 1942

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 -> G -> Gorgospyris -> Gorgospyris hemisphaerica
Other pages this level: G. cystophora, G. cystophora brevipes, G. cystophora cystophora, G. eurycolpos, G. hemisphaerica, G. hemisphaerica sibirica, G. hexapodalia, G. infida, G. lamellipes, G. lamellosa, G. liriope, G. medusa, G. medusetta, G. perizostra, G. perplexus, G. polypus, G. quinquespine, G. schizopodia, G. thamnopodia

Gorgospyris hemisphaerica

Citation: Gorgospyris hemisphaerica Clark & Campbell 1942
Rank: species
Type specimens: pl.9, fig.6
Type repository: University of California, Museum of Paleontology, San Francisco
Described on page(s) : p.61
Family (traditional): Trissocyclidae
Family (modern): Triospyridae

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Current identification/main database link: Gorgospyris hemisphaerica Clark & Campbell 1942


Original Description
Shell weakly dipleuric, nut-shaped, with twelve short, lamellar platelike feet which are curved inwardly, squarely truncated distally and almost as wide there as at the bases, equidistant, hyaline, often their edges ragged as if torn and jagged; cortinar plate with four large, equal pores, beams strong and crossed; shell divided vertically into two quadrants by the great-circle without external stricture, generally hemispherical, the surface with uniform, circular, small pores about sixteen in number on one face of the shell, arranged in four or five horizontal tiers, well-spaced, very small, the interporous area strongly and closely tuberculated so that the shell resembles a knotty nut-shell, its surface also wrinkled and rough; wall very thick and irregular in section and very dense; great-circle wholly internal; margin of shell slightly crinkled.

Length and breadth of shell, 76.0µm; length of feet, 27.6µm; diameter of pores, 6.6µm. Distinguishing characters (rw): Gorgospyris hemisphaerica n. sp. differs from G. ehrenbergii Haeckel (1887), (Barbados) in having half as many feet. Were they branched, it would be close to G. schizopodia Haeckel (1887). It differs from G. hexapodalia n. sp. in lacking a collar around the base of the shell and has twice as many feet.

Editors' Notes
[The authors here list this species under the subgeneric name Gorgospyrium and include the subgeneric name in the species name.

References:

Clark, B. L. & Campbell, A. S. (1942). Eocene radiolarian faunas from the Mt. Diablo area, California. Geological Society of America, Special Papers. 39: 1-112. gs


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Gorgospyris hemisphaerica compiled by the radiolaria@mikrotax project team viewed: 1-3-2021

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