radiolaria - rads_cat - Calocyclas rachiphora

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radiolaria - rads_cat - Calocyclas rachiphora radiolaria - rads_cat - Calocyclas rachiphora

CATALOG OF ORIGINAL DESCRIPTIONS: Calocyclas rachiphora Clark & Campbell 1945

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 -> Calocyclas -> Calocyclas rachiphora

Other pages this level: << < C. destefanii, C. disparidens, C. extensa, C. extensa contracta, C. hannai, C. hyalogaster, C. litos, C. margatensis, C. minervae, C. monumentum, C. motoyamai, C. nakasekoi, C. ovata, C. parthenia, C. pudica, C. rachiphora, C. sacerdotis, C. semipolita robusta, C. semipolita semipolita, C. talwanii, C. turris, C. veneris, C. vestalis, C. virginis

Calocyclas (Calompterium) rachiphora Clark and Campbell 1945.jpg

Calocyclas rachiphora

Citation: Calocyclas rachiphora Clark & Campbell 1945

Taxonomic rank: species

Type specimens: Pl.6, figs.18, 19, 21; pl.7, fig.1(?)

Type locality: LL598

Current identification:

Original Description

Tall, stately shell bearing close resemblance to semipolita Clark and Campbell (1942) in general form, having a small, knoblike or subglobose cephalis which is pinched off from the thorax at the neck, its apex having a long, conical, generally needlelike, distally sharp, basally simple apical horn with a few basal riblets; thorax twice as long as the cephalis, bitruncate-hemispherical, rather regularly symmetrical with moderately strong convex lateral contour and basally limited by a narrow, transverse waist band and local indentation; abdomen longer than the thorax (by 0.5 or more), generally subcylindrical but sometimes irregular and swollen in the middle, or again barrel-shaped, having local and minor inequalities of lateral contour; aperture in all our specimens ragged (probably torn); horn hyaline, otherwise the wall is dense; pores of cephalis small, circular, well spaced, deeply sunken, those of thorax larger, more closely set, and greater in number and size, similarly circular and of the same size, with a strong, raised polygonal meshwork from the nodal points. of which arise stout thorns; abdominal pores generally similar to those of the above shell-segment but somewhat larger, with a very well-developed polygonal framework and nodal thorns.

Size:

Total length upward to 220µm, usually about 167µm, of horn 67µm.

Etymology:

No information given

Extra details from original publication

Distinguishing features: Of the 4 figured specimens, our figure19 is the most regular, and perhaps typical of them all. Figure 21 is extremely aberrant, lacks an apical horn, and the 3 shell-segments differ from those of all the other shells in form and development; this shell ma

Editors' Notes

The authors here list Calocyclas rachiphora under the subgeneric name Calompterium and include the subgeneric name in the species name. This species is the type species of the subgenus CALOMPTERIUM[comment from RadWorld database]

References:
Clark, B. L. & Campbell, A. S. (1945b). Radiolaria from the Kreyenhangen Formation near Los Banos, California. Geological Society of America, Memoir. (10): 1-66. gs

Calocyclas rachiphora compiled by the radiolaria@mikrotax project team viewed: 26-3-2025

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=258888 Go to Archive.is to create a permanent copy of this page - citation notes

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