CATALOG OF ORIGINAL DESCRIPTIONS: Pterocodon tenellus 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 -> P -> Pterocodon -> Pterocodon tenellus
Other pages this level: P. anteclinata, P. apis, P. campana, P. campanella, P. davisianus, P. favosus, P. lex, P. ornatus, P. poculum, P. tenellus

Pterocodon tenellus

Citation: Pterocodon tenellus Foreman 1973
Rank: species
Type specimens: pl.5, fig.7, pl.12, fig.4
Described on page(s) : p.439
Family (traditional): Pterocorythidae
Family (modern): Pterocorythidae

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Current identification/main database link: Pterocodon tenellus Foreman 1973

Original Description
Shell of three or four complete segments and sometimes a fragment of a fifth, surface smooth. Cephalis subspherical with numerous small circular pores bearing a short, bladed horn. Internally collar stricture with four collar pores, externally not expressed, with contour of cephalis and thorax merging. Thorax subcampanulate with uniform, small, circular pores, set in upwardly directed frames, arranged quincuncially in transverse and diagonal rows; lumbar stricture well defined. Abdomen barrel-shaped, equal in width to or slightly broader than the thorax, with uniform circular pores slightly larger than and arranged as on the thorax. Distally a post-lumbar stricture expressed internally with two or three closely spaced septa and externally by a slight change in contour. Abdomen below this stricture short, with uniform pores tending to be transversely aligned. Rarely a stricture with one septum separates a fifth segment; margin ragged.

(Based on ten specimens) Length of cephalis andthorax, exclusive of horn, 75-90µm, of abdomen to post-lumbar stricture 55-75µm; greatest width of thorax 70-80µm, of abdomen 70-90µm. Distinguishing characters (rw): This species is distinguished from P (?) ampla (?) as described under that species.

Etymology: Latin tenellus, -a, -um = frail


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


Pterocodon tenellus compiled by the radiolaria@mikrotax project team viewed: 1-3-2021

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