radiolaria - rads_cat - Stylosphaera nana radiolaria - rads_cat - Stylosphaera nana

CATALOG OF ORIGINAL DESCRIPTIONS: Stylosphaera nana Haeckel 1887

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 nana
Other pages this level: << < 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, S. simplex, S. spinulosa, S. sulcata, S. terpsichore, S. testudo, S. thalia, S. trixyphophora, S. undulata, S. urania

Stylosphaera nana

Citation: Stylosphaera nana Haeckel 1887
Taxonomic rank: species
Described on page(s) : p.136
Type specimens: pl.16, figs.12,13
Type repository: No information given
Family (traditional): Actinommidae
Family (modern): Amphisphaeridae

Current identification:


Original Description

Radial proportion of the two spheres = 2:1. Cortical shell thick walled, somewhat irregular smooth, with irregular, roundish pores, one to three times as broad as the bars; eight to ten on the half equator. Polar spines three-sided pyramidal, scarcely as long as the axis of the outer sphere, and nearly as broad at the base as its radius. (A very variable and irregular form.)

Diameter of the outer shell 0.07 to 0.09, pores 0.003 to 0.009, bars 0.003; inner shell 0.03 to 0.04; length of the polar spines 0.04 to 0.07, basal breadth 0.03. [dimensions in mm]

References:

Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873-1876. 18: 1-1803. gs O


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

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