radiolaria - rads_cat - Stylosphaera megaxyphos

radiolaria - rads_cat - Stylosphaera megaxyphos radiolaria - rads_cat - Stylosphaera megaxyphos

CATALOG OF ORIGINAL DESCRIPTIONS: Stylosphaera megaxyphos 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 -> S -> Stylosphaera -> Stylosphaera megaxyphos

Other pages this level: << < S. hexaxyphophora, S. hexaxyphophora hexaxyphophora, S. hexaxyphophora octaxyphophora, S. hexaxyphophora pentaxyphophora, S. hispida, S. holosphaera, S. isoporata, S. jugata, S. laevis, S. liostylus, S. lithatractus, S. losbanosensis, S. macropora, S. macropora microaculeata, S. megadictya, S. megaxyphos, 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> >>

Stylosphaera megaxyphos

Citation: Stylosphaera megaxyphos Clark & Campbell 1942

Taxonomic rank: species

Described on page(s) : p.24

Type specimens: pl.5, figs.5,6,9,14; pl.6, figs.1,3,6,8

Type repository: University of California, Museum of Paleontology, San Francisco

Family (traditional): Actinommidae

Family (modern): Rhizosphaeridae

Current identification:

Original Description

Shell having two to five similar, greatly elongated, three-bladed prismatic polar spines in the same plane; cortical shell spherical, relatively thick-walled, its surface having subuniform, subcircular pores, four to six in number across a radius, these pores sunken into hexagonal areas from whose nodes arise tiny sepaloid points; medullary shell about a third the diameter of the cortical shell, with three to five pores across a radius; supporting beams heavy.

Extra details from original publication

Distinguishing characters: Stylosphaera megaxyphos n. sp. has larger pores and thicker walls than S. musa Haeckel (1887) and S. polyhymnia Haeckel (1887). Its wall is thicker and the polar spines longer than those of S. urania Haeckel (1887). The polar spines are much longer than those of S. calliope Haeckel (1887), the inner sphere smaller than that of S. clio Haeckel (1887) and S. dixyphos Haeckel (1887).

Editors' Notes

The authors here list this species under the subgeneric name Stylosphaerantha 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 megaxyphos compiled by the radiolaria@mikrotax project team viewed: 29-4-2025

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=252776 Go to Archive.is to create a permanent copy of this page - citation notes

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