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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.
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
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=262053 Go to Archive.is to create a permanent copy of this page - citation notes