CATALOG OF ORIGINAL DESCRIPTIONS: Zygostephanium paradictyum 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 -> Zygostephanium -> Zygostephanium paradictyum
Other pages this level: Z. constrictum, Z. dizonium, Z. paradictyum

Zygostephanium paradictyum

Citation: Zygostephanium paradictyum Haeckel 1887
Rank: species
Type specimens: pl.93, fig.4
Type repository: No information given
Described on page(s) : p.973
Family (traditional): Trissocyclidae
Family (modern): Acanthodesmiidae

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Current identification:

Original Description
Frontal ring kidney-shaped, in the upper half convex, in the lower concave, in the latter with a deep sagittal constriction. Sagittal ring ovate, about two-thirds as high as the frontal ring. Both rings three-edged, armed with numerous short and branched bristle-shaped spines, which anastomose along their three edges and produce two series of irregular polygonal pores.

Height of the frontal ring 0.08, breadth 0.13.

Editors' Notes
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


Zygostephanium paradictyum compiled by the radiolaria@mikrotax project team viewed: 20-6-2021

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