radiolaria - rads_cat - Stylosphaera simplex

radiolaria - rads_cat - Stylosphaera simplex radiolaria - rads_cat - Stylosphaera simplex

CATALOG OF ORIGINAL DESCRIPTIONS: Stylosphaera simplex 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.

Higher levels: rads_cat -> S -> Stylosphaera -> Stylosphaera simplex

Other pages this level: << < S. megaxyphos megaxyphos, S. megaxyphos pentaxyphos, S. megaxyphos tetraxyphos, S. megaxyphos trixyphos, S. melpomene, S. minor, S. minor brevihastata, S. minor leptoxyphos, S. minor minor, S. musa, S. nana, S. polyhymnia, S. radiosa, S. raripora, S. setosa, S. simplex, S. spinulosa, S. sulcata, S. terpsichore, S. testudo, S. thalia, S. trixyphophora, S. undulata, S. urania

Stylosphaera (Stylosphaerantha) simplex Clark and Campbell 1945.jpg

Stylosphaera simplex

Citation: Stylosphaera simplex Clark & Campbell 1945

Taxonomic rank: species

Described on page(s) : p.11

Type specimens: pl.1, fig.12

Type locality: LL598

Current identification:

Original Description

Shell small, spherical, and with two opposite, similar polar spines; these spines short (0.6 diameter of cortical shell), conical (12°), with sharp free tips, circular section, and simple bases; cortical shell smooth, lacking polygonal meshwork, and with thin wall; medullary shell very delicate and small (only 0.24 diameter of cortical shell), subpolygonal, supported by 2 opposite polar twiglike radial beams which, like the shell, are visible only under the best optical conditions (perhaps there are more than 2 beans [sic, beams?]); pores of cortical shell similarly circular, of the same size, rather small, very well spaced, and not at all numerous (hardly a dozen across a diameter); pores of medullary shell very few (only 3 across a diameter), subpolygonal; surface of cortical shell smooth; framework of medullary shell slender.

Size:

Length of polar spines 47.4µm; diameter of cortical shell 82.6µm of medullary shell 21µm, diameter of cortical pores 4.4µm.

Etymology:

No information given

Extra details from original publication

Distinguishing features: Although no complete specimen was found, so odd is this little species that, even though incomplete, it is named and described. The tiny, lacey medullary shell, short polar spines, and the smooth wall with tiny pores all distinguish it from any of the des

Editors' Notes

The authors here list Stylosphaera simplex under the subgeneric name Stylosphaerantha and include the subgeneric name in the species name.[comment from RadWorld database]

References:
Clark, B. L. & Campbell, A. S. (1945b). Radiolaria from the Kreyenhangen Formation near Los Banos, California. Geological Society of America, Memoir. (10): 1-66. gs

Stylosphaera simplex compiled by the radiolaria@mikrotax project team viewed: 21-5-2025

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=258826 Go to Archive.is to create a permanent copy of this page - citation notes

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