CATALOG OF ORIGINAL DESCRIPTIONS: Stylosphaera gonioxyphos 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.
Stylosphaera (Stylosphaerella) gonioxyphos Clark and Campbell 1942.jpg
Stylosphaera gonioxyphos
Citation: Stylosphaera gonioxyphos Clark & Campbell 1942Taxonomic rank: speciesDescribed on page(s) : p.30Type specimens: pl.5, fig.28Type repository: University of California, Museum of Paleontology, San FranciscoFamily (traditional): ActinommidaeFamily (modern): Rhizosphaeridae
Current identification:
Original Description Shell globular, with two polar spines of equal length, these rather thin and needle-like, of approximately the same diameter throughout, circular in cross section except in the distal 0.3 or more, where there are three feeble slightly twisted angles, the tips minutely blunted, the spines about as long as the diameter of the cortical shell; cortical shell spherical, wall moderately thick, surface with large subcircular pores sunken into subhexagonal areas, with conical sepaloid points making the whole surface bristly, pores six across a radius; medullary shell about 0.3 diameter of cortical shell, with four (? ) circular pores across a radius, bars thick, dense, two polar supporting beams stronger than the more numerous radial ones. Size: Length of polar spines, 140µm; diameter of cortical shell, 160µm; of medullary shell, 43µm; of pores of cortical shell, 10µm. Extra details from original publication Distinguishing characters:Stylosphaera gonioxyphos differs from the other species of the genus in the distally angled polar spines. In other species, the angulation is either limited to the bases of the spines, or else continued the whole length of the spine, forming a blade, or sword-like spine. The polar spines are much thinner than those of S. minor n. sp. Editors' Notes [The authors here list this species under the subgeneric name Stylosphaerella and include the subgeneric name in the species name.
References:
Clark, B. L. & Campbell, A. S. (1942a). Eocene radiolarian faunas from the Mt. Diablo area, California. Geological Society of America, Special Papers. 39: 1-112. gs
Stylosphaera gonioxyphos compiled by the radiolaria@mikrotax project teamviewed: 29-4-2025
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 gonioxyphos Clark and Campbell 1942.jpg)
Stylosphaera (Stylosphaerella) gonioxyphos Clark and Campbell 1942.jpg gonioxyphos Clark and Campbell 1942.jpg)
Stylosphaera (Stylosphaerella) gonioxyphos Clark and Campbell 1942.jpg
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