CATALOG OF ORIGINAL DESCRIPTIONS: Stichopilium costatum 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.
Citation: Stichopilium costatum Haeckel 1887Taxonomic rank: speciesDescribed on page(s) : p.1437Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]Type locality: LM12Type repository: No information given
Current identification:
Original Description Shell conical, or nearly pyramidal, with three distinct strictures. Length of the four joints = 3: 5: 8: 4. Cephalis subconical, with a stout pyramidal horn of the same length. Thorax campanulate, with six longitudinal ribs, from three of which in the middle arise three horizontal, conical, free spines or wings, about as long as the cephalis. The third large prismatic joint bears twelve parallel ribs, six new ribs being intercalated between the six former. Fourth joint short, cylindrical, without ribs, the wide open mouth not constricted, nearly as broad as the third joint, which is the broadest. Pores small, irregular, polygonal, or roundish. Size: Length of the shell (with four joints) 0.2, breadth 0.12. Length of the single joints, a 0.03, b 0.05, c 0.08, d 0.04. Editors' Notes There was no illustration of this species in Haeckel (1887) Haeckel listed Stichopilium costatum under the subgeneric name Triacartus, but did not include the subgeneric name in the species name.[comment from RadWorld database]
References:
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 years 1873-1876. 18: 1-1803. gsO
Stichopilium costatum compiled by the radiolaria@mikrotax project teamviewed: 16-11-2025
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