CATALOG OF ORIGINAL DESCRIPTIONS: Semantidium hexastoma 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 -> Semantidium -> Semantidium hexastoma
Other pages this level: S. hexastoma, S. sexangulum, S. signatorium

Semantidium hexastoma

Citation: Semantidium hexastoma Haeckel 1887
Rank: species
Type locality: LM17
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type specimens: pl.92, fig.6
Type repository: No information given
Described on page(s) : p.960

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Current identification:

Original Description
Sagittal ring ovate, thorny. Basal ring rhombic or nearly square, with four short conical descending spines on the four prominent edges (two sagittal and two lateral); between them numerous smaller irregular thorns. Jugular and cervical gates nearly equal, ovate, half as broad as the triangular cardinal gates between them.

Size: Height of the sagittal ring 0.14, breadth 0.1.


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


Semantidium hexastoma compiled by the radiolaria@mikrotax project team viewed: 7-3-2021

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