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CATALOG OF ORIGINAL DESCRIPTIONS: Theocyrtis aculeata Cleve 1900

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 -> T -> Theocyrtis -> Theocyrtis aculeata
Other pages this level: T. aculeata, T. ampla, T. andriashevi, T. careotuberosa, T. diabloensis, T. hirta, T. macroceros, T. mugaicus, T. perpumila, T. perysinos, T. proserpinae, T. ptychodes, T. redondoensis, T. setanios, T. triapenna, T. trimembris, T. tuberosa, T. turris

Theocyrtis aculeata

Citation: Theocyrtis aculeata Cleve 1900
taxonomic rank: species
Described on page(s) : p.12
Type specimens: pl.4, fig.11
Family (traditional): Pterocorythidae
Family (modern): Pterocorythidae

Current identification:

Original Description

Shell thick-walled. Length of the three-joints 1:2:4; breadth 1:3:3. Cephalis hemispherical, with a strong horn, longer than the cephalis. Thorax slightly inflated. Abdomen cylindrical, with several rows of strong aculei towards the mouth. Pores of the thorax and abdomen nearly equal form and size, circular, regular, quincuncially disposed, 3 to 4 times as broad as the bars.

Length of the three joints: a 25µm, b 60µm, c 110µm.; breadth: a 30µm, b 76µm, c 90µm. Horn 40µm long.

Latin aculeatus -a -um = spiny

Editors' Notes
[Synonymized with Theocorythium trachelium dianae by Nigrini, 1967
and with Lamprocyclas cranoides (Haeckel) by Petrushevskaya, 1971b]


Cleve, P. T. (1900a). Notes on some Atlantic plankton-organisms. Vetenskaps-Akademiens Handlingar, Kongliga Svenska Stockholm. 34(1): 1-22. gs

Nigrini, C. A. (1967). Radiolaria in pelagic sediments from the Indian and Atlantic Oceans. Bulletin of the Scripps Institution of Oceanography. 11: 1-125. gs

Petrushevskaya, M. G. (1971d). Radiolyarii Nasselaria v planktone Mirovogo okeana [Nasellarian radiolarians in the plankton of the world ocean]. Trudy Zoologicheskogo Instituta Academiya Nauk SSSR. 9(17): 1-294. gs O


Theocyrtis aculeata compiled by the radiolaria@mikrotax project team viewed: 21-7-2024

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