CATALOG OF ORIGINAL DESCRIPTIONS: Zygostephanus dissocircus 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 -> Zygostephanus -> Zygostephanus dissocircus
Other pages this level: Z. bicornis, Z. dissocircus, Z. muelleri, Z. octoformis, Z. ramosus, Z. reniformis, Z. serratus, Z. violina

Zygostephanus dissocircus

Citation: Zygostephanus dissocircus Haeckel 1887
Rank: species
Type specimens: pl.93, fig.1
Type repository: No information given
Described on page(s) : p.971
Family (traditional): Trissocyclidae
Family (modern): Acanthodesmiidae

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Current identification:

Original Description
Both rings elliptical, of nearly equal height, smooth, without spines. Frontal ring somewhat longer than the sagittal. No sagittal constriction.

Height of the rings 0.07, breadth 0.1.

Editors' Notes
Haeckel listed Zygostephanus dissocircus under the subgeneric name Zygostephus, but did not include the subgeneric name in the species name.

Figure. It is clear from the family discussion of Coronida (p.967-969) that haeckel meant to assign the following key to the letters on his illustration: r = primary sagittal ring; q = lateral or frontal ring.


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


Zygostephanus dissocircus compiled by the radiolaria@mikrotax project team viewed: 17-6-2021

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