CATALOG OF ORIGINAL DESCRIPTIONS: Orbula discipulus Foreman 1973

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 -> O -> Orbula -> Orbula discipulus
Other pages this level: O. comitata, O. discipulus, O. ducalis,

Orbula discipulus

Citation: Orbula discipulus Foreman 1973
Rank: species
Holotype Repository: Holotype n° USNM17855 (DSDP 86-8-3, 46-48 cm, E42/0); paratype n° USNM 178756, DSDP 10-86-8(CC),W44/2U. S. National Musem, Washington, D. C.
Type & figured specimens: pl.3, fig.10, pl.10, figs.9,10
Description on pages: p.438
Family (traditional): Theoperidae
Family (modern): Bekomidae

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Current identification/main database link: Orbula discipulus Foreman 1973


Original Description
Cephalis subspherical, poreless, but with numerous circular, pore-shaped depressions, bearing a slender cylindrical horn never observed complete, and sometimes tiny vertical and secondary lateral spines. Surface of cephalis and proximal thorax roughened with minute papillae. Collar stricture well defined externally, internally with six collar pores, as for 0. comitata but with collar structures not so weak. Thorax unevenly campanulate, except distally where it constricts to terminate in an apertural rim with surface minutely papillate. Three ribs extend approximately two-thirds down the length of the thorax, terminating as three short, rodlike feet at the point where the thorax begins to constrict. Thoracic pores angular to subcircular, irregular in size and arrangement; surface tuberculate.

(Based on twenty specimens). Length overall, exclusive of horn, 180-230µm; greatest width of thorax 190-255µm, diameter of aperture 105-140µm. Distinguishing characters (rw): This species is distinguished from 0. ducalis by its shape and irregularly arranged pores, and from 0. comitata by its greater size and irregularly arranged and relatively smaller pores.

References:

Foreman, H. P. (1973a). Radiolaria of Leg 10 with systematics and ranges for the families Amphipyndacidae, Artostrobiidae, and Theoperidae. Initial Reports of the Deep Sea Drilling Project. 10: 407-474. gs


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Orbula discipulus compiled by the radiolaria@mikrotax project team viewed: 18-9-2020

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