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

Semantidium sexangulum

Citation: Semantidium sexangulum Haeckel 1887
Rank: species
Type locality: LM54
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type repository: No information given
Described on page(s) : p.960

<% linkedspecs %>

Current identification:

Original Description
Sagittal ring ovate, with six pairs of short branched thorns (two apical, two dorsal, and two ventral). Basal ring hexagonal, with three pairs of short branched thorns on the six corners (one sagittal pair, one posterior and one anterior). All six gates of the basal plate triangular, the jugular and cervical a little smaller than the cardinal gates.

Size: Height of the sagittal ring 0.1, breadth 0.07.

Editors' Notes
There was no illustration of this species in Haeckel (1887)


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

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
Captcha Image
Powered by Commentics