radiolaria - rads_cat - Stylosphaera goruna radiolaria - rads_cat - Stylosphaera goruna

CATALOG OF ORIGINAL DESCRIPTIONS: Stylosphaera goruna Sanfilippo & Riedel 1973

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 goruna
Other pages this level: S. angelina, S. calliope, S. carduus, S. clio, S. coronata, S. coronata macrosphaera, S. coronata sabaca, S. datura, S. eocenica, S. erato, S. euterpe, S. fairchildi, S. flexuosa, S. fornasinii, S. gonioxyphos, S. goruna, S. haeckeliana, 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> >>

Stylosphaera goruna

Citation: Stylosphaera goruna Sanfilippo & Riedel 1973
Taxonomic rank: species
Described on page(s) : p.521
Type specimens: pl.1, figs.20-22,

Current identification/main database link: Amphisphaera spinulosa (Ehrenberg) Petrushevskaya 1974


Original Description

Cortical shell ellipsoidal, of variable wall thickness, with pores subcircular or occasionally rosette-shaped, of irregular size and arrangement (distance between centers approximately 9-l7.5 µ. From the surface of the cortical shell arise several strong, bladed spines -commonly a long one at or near each pole (its length approaching that of the cortical shell) and 1-3 shorter ones scattered over each half-ellipsoid. Medullary shell single, delicate, pyriform, with its axis not aligned with the longer spines (and therefore commonly appearing ro be circular in outline). Cortical and medullary shells joined by six or more radial bars, some of which are collinear with some of the external spines. In the older assemblages examined, many specimens have no medullary shells nor internal bars.

Size:
Based on 20 specimens from 86-7, CC; 86-8. CC and 96-3-1). Major diameter of cortical shell 65-l05 µ, its minor diam-eter 60-95 µ. Width of medullary shell 25-35 µ.

Etymology:
The specific name is an arbitrary combination of letters, used as a noun in apposition.

Extra details from original publication
Distinguishing features: This species is distinguished principally by possessing two or more strong spines on each half-ellipsoid. Excluded from the present definition are rare specimens resembling Stylosphoera coronata but with two spines at one pole and one at the other (Plate


Editors' Notes
Synonymized with Amphisphaera spinulosa (Ehrenberg) group by Petrushevskaya, 1975c, p.570[comment from RadWorld database]

References:

Sanfilippo, A. & Riedel, W. R. (1973). Cenozoic Radiolaria (exclusive of theoperids, artostrobiids and amphipyndacids) from the Gulf of Mexico, Deep Sea Drilling Project Leg 10. Initial Reports of the Deep Sea Drilling Project. 10: 475-608. gs O


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

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