CATALOG OF ORIGINAL DESCRIPTIONS: Sethostylus hastatus 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 -> Sethostylus -> Sethostylus hastatus
Other pages this level: S. acutus, S. dentatus, S. dicylindrus, S. distyliscus, S. hastatus, S. logchophorus, S. serratus, S. spicatus

Sethostylus hastatus

Citation: Sethostylus hastatus Haeckel 1887
Rank: species
Type repository: No information given
Described on page(s) : p.429
Family (traditional): Coccodiscidae

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Current identification:

Original Description
Disk with smooth surface, two and a half times as broad as the medullary shell. Pores irregular, roundish; ten to twelve on the radius of the disk. Margin with a broad solid equatorial girdle, which bears on the periphery six conical teeth, three on each half between the two main spines, which are cylindrical, longer than the diameter of the disk, and half as broad as the girdle. (This species can be derived from Heliosestrum, two opposite spines of the eight marginal spines being much stronger developed than the other six.)

Diameter of the disk 0.15, of the medullary shell 0.06; length of both main spines 0.2, breadth 0.01.

Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Sethostylus hastatus under the subgeneric name Heliostylus, but did not include the subgeneric name in the species name.


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


Sethostylus hastatus compiled by the radiolaria@mikrotax project team viewed: 25-2-2021

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