radiolaria - rads_cat - Zonidium octotholium

CATALOG OF ORIGINAL DESCRIPTIONS: Zonidium octotholium 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 -> Z -> Zonidium -> Zonidium octotholium
Other pages this level: Z. octostylium, Z. octotholium

Zonidium octotholium

Citation: Zonidium octotholium Haeckel 1887
Rank: species
Type specimens: pl.50, fig.12-12a
Type repository: No information given
Described on page(s) : p.688
Family (traditional): Pyloniidae
Family (modern): Pyloniidae

Current identification:

Original Description
Cortical shell nearly octangular, with spiny surface; twenty long and stout radial spines between numerous smaller spines; eight wing-spines opposite in pairs in two crossed diagonal planes (as in the preceding species); twelve other strong spines in the lateral plane (four longer opposite in pairs on the poles of the principal and transverse axes, eight others smaller, alternating between these and the diagonal spines). Sagittal constriction twice as long as the hexagonal medullary shell. Four median cupolas somewhat smaller than the four lateral cupolas.

Length of the cortical shell 0.18, breadth 0.15; length of the medullary shell 0.07, breadth 0.05.


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 year 1873-1876, Zoology. 18: 1-1803. gs


Zonidium octotholium compiled by the radiolaria@mikrotax project team viewed: 6-12-2021

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
Captcha Image
Powered by Commentics