Sethostylus dicylindrus Haeckel 1887.jpg
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Sethostylus dicylindrus Haeckel 1887.jpg<% linkedspecs %>
Current identification: Sethostylus dicylindrus
Original Description
Disk with smooth surface, four times as broad as the medullary shell. Pores regular, circular; sixteen to eighteen on the radius of the disk. Margin of the disk simple, smooth, thick, without peculiar equatorial girdle. Both marginal spines cylindrical, about as long as the diameter of the disk, about twice as broad as a single pore. (Walls of the disk in the central part twice to three times as thick as in the peripheral part.)
Size: Diameter of the disk 0.2, of the medullary shell 0.05; length of both spines 0.2 to 0.3, breadth 0.008.
Editors' Notes
Haeckel listed Sethostylus dicylindricus under the subgeneric name Sethostylium, but did not include the subgeneric name in the species name.
Stratigraphic information for LM21 from Riedel, 1959, p.287.[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. gsReferences:
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Sethostylus dicylindrus compiled by the radiolaria@mikrotax project team viewed: 7-3-2021
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