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

Zygostephanium dizonium

Citation: Zygostephanium dizonium Haeckel 1887
Rank: species
Type specimens: pl.93, fig.3
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
Both rings elliptical, of nearly equal height, smooth, without spines. Sagittal ring with four pairs of small pores (two apical pairs. and two basal pairs). Frontal ring with three pairs of small pores (one pair lateral, one pair above and one pair below).

Height of the frontal ring 0.08, breadth 0.12.

Editors' Notes
Stratigraphic information for LM21 from Riedel, 1959, p.287.

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

Riedel, W. R. (1959). Oligocene and Lower Miocene Radiolaria in tropical Pacific sediments. Micropaleontology. 5(3): 285-302. gs


Zygostephanium dizonium compiled by the radiolaria@mikrotax project team viewed: 3-3-2021

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