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

Sethostylus distyliscus

Citation: Sethostylus distyliscus Haeckel 1887
Rank: species
Type locality: LM17
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type specimens: pl.31, fig.9
Type repository: No information given
Described on page(s) : p.428

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Current identification:

Original Description
Disk with smooth surface, three times as broad as the medullary shell. Pores regular, circular; nine to ten on the radius of the disk, in the outer rows cylindrical. Margin of the disk simple, smooth, thin, without peculiar equatorial girdle, radially striped by the prominent beams of the peripheral series of pores. Both marginal spines of equal size, pyramidal, sulcated, about as long as the radius of the disk and as broad at the base as the medullary shell.

Size: Diameter of the disk 0.13 to 0.16, of the medullary shell 0.04 to 0.05; length of both opposite spines 0.06 to 0.08, basal breadth 0.03 to 0.04.

Editors' Notes
Haeckel listed Sethostylus distyliscus under the subgeneric name Sethostylium, but did not include the subgeneric name in the species name.

Figure description: for Sethostylus dictyliscus read Sethostylus distyliscus[comment from RadWorld database]


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 distyliscus compiled by the radiolaria@mikrotax project team viewed: 7-3-2021

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