radiolaria - rads_cat - Cromyomma villosum radiolaria - rads_cat - Cromyomma villosum

CATALOG OF ORIGINAL DESCRIPTIONS: Cromyomma villosum Haeckel 1887

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 -> C -> Cromyomma -> Cromyomma villosum
Other pages this level: C. circumtextum, C. macroporum, C. mucronatum, C. perplexum, C. perspicuum, C. riedeli, C. spinulosa, C. tuberculata, C. villosum

Cromyomma villosum

Citation: Cromyomma villosum Haeckel 1887
taxonomic rank: species
Described on page(s) : p.261
Type specimens: pl.30, fig.2
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type locality: LM20
Type repository: No information given

Current identification/main database link: Cromyomma villosum Haeckel 1887

Original Description

Radial proportion of the four spheres = 1: 2: 4: 5. Outer cortical shell thick walled, densely covered with innumerable bristle-shaped radial spines, half as long as the radius. Pores regular, circular, double-edged, of the same breadth as the bars; ten to twelve on the radius. The thick outer shell is so dark, that the outlines only of the other three shells can be seen.

Diameter of the four shells - (A) outer cortical shell 0.2, (B) inner cortical shell 0.16, (C) outer medullary shell 0.08, (D) inner medullary shell 0.04; pores and bars of the outer shell 0.008; length of the spines 0.04.

Editors' Notes
Haeckel listed Cromyomma villosum under the subgeneric name Cromyommetta, but did not include the subgeneric name in the species name.[comment from RadWorld database]


Haeckel, E (1887). Report on the Radiolaria collected 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. 18: 1-1803. gs O


Cromyomma villosum compiled by the radiolaria@mikrotax project team viewed: 23-6-2024

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