CATALOG OF ORIGINAL DESCRIPTIONS: Gorgospyris cystophora cystophora 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 cystophora cystophora
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 cystophora cystophora

Citation: Gorgospyris cystophora cystophora Clark & Campbell 1942
Rank: sub-species
Type specimens: pl.9, fig.8
Type repository: University of California, Museum of Paleontology, San Francisco
Described on page(s) : p.60
Family (traditional): Trissocyclidae
Family (modern): Triospyridae

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Current identification:


Original Description
Shell equally dipleuric, hemispherical, with eight relatively long, slender, straight, divergent, twiglike feet; tips minutely blunted, sides with very small scattered thorns; shell divided vertically into two equal lobes by a moderately deep, sagittal, narrow stricture or groove, the lobes (only slightly) separated, the surface with large, oval, or circular, gatelike pores, seven visible on one side of one lobe, those of the two sides similar, a small pore near the sagittal ring and above the apertural margin flanked by a larger one, a larger median one flanked by two, the middle one smaller than its distal-lateral mate, and a pair of roofing pores on one side of each lobe, the framework of thick, rounded bars, these hyaline, with short spines, especially on the coryphal face and sides, one very small, triangular, submedian pore on the depressed great-circle, and a tiny round one below it; aperture simple.

Length of foot, 78.2µm (tip broken); of shell, 76.0µm; diameter of longest median gate-pore, 25.4µm; of breadth of shell, 98.0µm. Distinguishing characters (rw): Gorgospyris cystophora cystophora n. subsp. differs from G. cystophora brevipes n. subsp. in having longer feet and in lacking numerous spines on the shall; the feet also lack the roughening but have thorns.

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

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