radiolaria - rads_cat - Stylocyclia excavata radiolaria - rads_cat - Stylocyclia excavata

CATALOG OF ORIGINAL DESCRIPTIONS: Stylocyclia excavata 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 -> Stylocyclia -> Stylocyclia excavata
Other pages this level: S. amphacantha, S. dimidiata, S. excavata, S. prionacantha

Stylocyclia excavata

Citation: Stylocyclia excavata Haeckel 1887
Taxonomic rank: species
Described on page(s) : p.463
Type specimens: pl.37, fig.8
Type repository: No information given
Family (traditional): not-known

Current identification:


Original Description

Phacoid shell four times as broad as the medullary shell, surrounded by four chambered rings, which are divided by twenty to thirty radial beams into broad chambers. The height of the rings increases strongly from the centre, so that the fourth ring is two and a half times as high as the first. Pores irregular, roundish; five to six on the radius of the phacoid shell, one to two on the breadth of each ring. Margin of the disk smooth. Both marginal spines thin and long, cylindrical, arising from the medullary shell, longer than the diameter of the disk.

Diameter of the disk (with four rings) 250µm, of the phacoid shell 100µm, of the medullary shell 25µm.

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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Stylocyclia excavata compiled by the radiolaria@mikrotax project team viewed: 20-7-2025

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=252737 Go to Archive.is to create a permanent copy of this page - citation notes



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