CATALOG OF ORIGINAL DESCRIPTIONS: Semantis biforis 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 -> Semantis -> Semantis biforis
Other pages this level: S. biforis, S. crescenda, S. dipyla, S. distephanus, S. distoma, S. micropora, S. sigillum, S. triangularis, S. triforis

Semantis biforis

Citation: Semantis biforis Haeckel 1887
Rank: species
Type specimens: pl.92, fig.2
Type repository: No information given
Described on page(s) : p.956
Family (traditional): Trissocyclidae
Family (modern): Acanthodesmiidae

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Current identification:

Original Description
Sagittal ring obliquely ovate, nearly trapezoidal, with six pairs of short mammillated knobs or branches; dorsal rod straight, vertical, with two pairs of knobs, ventral rod strongly convex, also with two pairs of knobs; two other pairs in the apical rod. Basilar rod horizontal, straight. Basal ring with six pairs of similar knobs, three on each side. Basal gates ovate or nearly triangular.

Height of the sagittal ring 0.09, breadth 0.07.

Editors' Notes
Stratigraphic information for LM21 from Riedel, 1959, p.287.


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

Riedel, W. R. (1959). Oligocene and Lower Miocene Radiolaria in tropical Pacific sediments. Micropaleontology. 5(3): 285-302. gs


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

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