radiolaria - rads_cenozoic - Stichopilium bicorne

Stichopilium bicorne

Classification: rads_cenozoic -> Theoperidae -> Stichopiliidae -> Stichopilium -> Stichopilium bicorne
Sister taxa: S. bicorne, S. variabilis, S. sp.


Citation: Stichopilium bicorne Haeckel 1887
Rank: species
Basionym: Stichopilium bicorne
Taxonomic discussion: Haeckel 1887 p.1437 pl.77 fig.9 ; Neogene; Triacartus bicorne Haeckel

Catalog entries: Stichopilium bicorne

Original description: Shell conical, with three slight strictures. Length of the four joints = 4: 14: 5: 3. Cephalis large, conical, with two stout pyramidal, divergent horns of twice the length. From its base (in the middle of the collar stricture) arise three internal, downwardly divergent ribs, which are prolonged on the outside of the upper half of the thorax into three stout, pyramidal, lateral spines (similar to the horns). The fourth joint, with wide open mouth, was the broadest, but not fully developed in the single specimen observed. Pores subregular, hexagonal, with thin bars.
Remarks on original description: Haeckel listed Stichopilium bicorne under the subgeneric name Triacartus, but did not include the subgeneric name in the species name.[comment from RadWorld database]




Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"

Plot of occurrence data:


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


Stichopilium bicorne compiled by the radiolaria@mikrotax project team viewed: 7-10-2022

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