Catalog - Rhizammina indivisa Catalog - Rhizammina indivisa

CATALOG OF ORIGINAL DESCRIPTIONS: Rhizammina indivisa Brady, 1884

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: bf_cat -> R -> Rhizammina -> Rhizammina indivisa
Other pages this level: R. indivisa

Rhizammina indivisa

Citation: Rhizammina indivisa Brady, 1884
Taxonomic rank: species
Described on page(s) : 277
Type specimens: pl. 29, figs. 5–7.
Type sample (& lithostrat): Surface sediments.
Type age (chronostrat): Recent.
Type locality: Not designated. Locality given: Faröe Channel, 540 fathoms.
Type repository: London; The Natural History Museum, London, UK.

Current identification/main database link: Rhizammina indivisa Brady, 1884


Original Description

Test free, cylindrical, flexible; consisting of an unbranched chitin-arenaceous tube, often tapering towards the ends. Apertures terminal.

Flexible unbranched tubes, the investment of a Rhizopod to all appearance closely allied to the species last described [Rhizammina algaeformis] not unfrequently present themselves in dredged material, especially in Globigerina ooze from moderate depths. Our knowledge of these forms is as yet very slight, and all that can at present be done is to describe their salient characters, and to furnish a name by which they may be identified. Some specimens of the sort referred to are figured in pl. 29, figs. 5-7.

The test is cylindrical and seldom straight; it generally tapers towards the extremities, one or both of which may occasionally be found with a constricted mouth, but more frequently in preserved specimens the ends are broken or collapsed. The chitinous envelope is of brownish colour, and comparatively slender, but it is encrusted with Globigerinae or other foreign bodies, often to a considerable thickness. The exterior of the test is always rough, and sometimes transversely wrinkled as in fig. 7.

Size:
Length, 1/3rd inch (8 mm.), more or less.

References:

Brady, H. B. (1884). Report on the foraminifera dredged 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 years 1873-1876. 9: 1-814. gs

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Rhizammina indivisa compiled by the bforams@mikrotax project team viewed: 18-7-2026

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