CATALOG OF ORIGINAL DESCRIPTIONS: Schizodiscus codrant Petrushevskaya 1975

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 -> Schizodiscus -> Schizodiscus codrant
Other pages this level: S. codrant, S. disymmetricus, S. japonicus, S. spatangus, S. stylotrochoides

Schizodiscus codrant

Citation: Schizodiscus codrant Petrushevskaya 1975
Rank: species
Type specimens: pl.38, figs.1-7
Type repository: Holotype No.62244, Marine Dept., Zoological Institute, Acad. of Sc., St Petersburg, Russia. [Not illustrated]
Described on page(s) : p.574
Family (traditional): Spongodiscidae
Family (modern): Stylodictyidae

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Current identification/main database link: Schizodiscus codrant Petrushevskaya 1975

Original Description
Skeleton in a form of the regular disk, but with the recess in the middle of each flattened surface. It may be named a concave lens. From a recess short spines arise (by-spines?), which support the gown. The latter forms a small lid above the recess. Gown with small pores and similar to the gown in Spongodiscus resurgens osculosus, where the middle part of the gown is also supported by the spines. Distinguishing characters (rw): Schizodiscus codrant differs from S. resurgens osculosus by having larger and more rough and irregular spongy meshes. Schizodiscus codrant differs from Schizodiscus favus maxima and from Schizodiscus disymmetricus by the concave form of its main disk. The form of the disk in Schizodiscus codrant is very similar to that in Orbiculiforma vacaensis Pessagno, 1973 (compare pl. 17, fig. 1-6 with Plate 38, Figure 7 in the present paper).

Editors' Notes
The description is based on 57 specimens from Site 278, (Cores 27 and others).


Petrushevskaya, M. G. (1975a). Cenozoic radiolarians of the Antarctic, Leg 29, DSDP. Initial Reports of the Deep Sea Drilling Project. 29: 541-675. gs


Schizodiscus codrant compiled by the radiolaria@mikrotax project team viewed: 25-2-2021

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