radiolaria - rads_cat - Stichopilium costatum radiolaria - rads_cat - Stichopilium costatum

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.


Higher levels: rads_cat -> S -> Stichopilium -> Stichopilium costatum
Other pages this level: S. annulatum, S. anocor, S. bicorne, S. campanulatum, S. cortina, S. costatum, S. cunninghami, S. macropterum, S. obliqum, S. pectinatum, S. phtthinados, S. rapaeformis, S. thoracopterum, S. triserratum, S. uncinatum, S. variabilis

Stichopilium costatum

Citation: Stichopilium costatum Haeckel 1887
Taxonomic rank: species
Described on page(s) : p.1437
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type locality: LM12
Type 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. gs O


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Stichopilium costatum compiled by the radiolaria@mikrotax project team viewed: 16-11-2025

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