radiolaria - rads_cat - Clathrocyclas universa amplaspina

CATALOG OF ORIGINAL DESCRIPTIONS: Clathrocyclas universa amplaspina Clark & Campbell 1942

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 -> Clathrocyclas -> Clathrocyclas universa amplaspina
Other pages this level: C. alcmenae, C. aurelia, C. australis, C. basilea, C. cabrilloensis, C. cassiopeiae, C. collaris, C. coscinodiscus, C. danaes, C. diceros, C. europae, C. humerus, C. jonis, C. latonae, C. lipmanae, C. pirum, C. principessa, C. semeles, C. transitiva, C. universa, C. universa amplaspina, C. universa cylindrica, C. universa grandis, C. universa grandis [pri. jun. hom], C. universa kranimorphos, C. universa longispina, C. universa nova, C. universa subadvena, C. universa undella, C. universa universa

Clathrocyclas universa amplaspina

Citation: Clathrocyclas universa amplaspina Clark & Campbell 1942
Rank: sub-species
Described on page(s) : p.89
Type specimens: pl.7, fig.16
Type repository: University of California, Museum of Paleontology, San Francisco
Family (traditional): Theoperidae
Family (modern): Theopilidae

Current identification:

Original Description

Shell generally conical in the upper part, subcylindrical below, with short abdomen and with stout, clublike echinoid spine, its length 0.37 total length, the tip blunted, the base simple, and the upper region a little thick, tapering more gradually in the proximal portion than distally; cephalis conical (50°), longer than usual (nearly 0.2 total length), its base more than 0.6 wider than high, the sides strictly plane, and the whole cone distinct in its contour from the thorax; thorax convex in the upper 0.5 and subcylindrical in the lower section, its widest level near the middle (nearly 0.5 total length); abdomen short (about 0.1 total length), flaring (52°), with plane or concave sides; remainder of shell characters, wall, and surface as much as in C. universa undella n. subsp., but the pores are a little bigger.

Length, 183µm; of horn, 73µm; diameter of aperture, 93µm; of largest pores, 16.7µm. Distinguishing characters (rw): This variety differs from C. universa grandis n. var in much shorter and very different abdomen and in less swollen thorax, but the apical horns are much alike. Its horn is not at all like that of C. universa undella n. subsp. and the remaining varieties.



Latin amplus + spina -ae = wide spine

Extra details from original publication

Editors' Notes
[The authors here list this species under the subgeneric name Clathrocyclia and include the subgeneric name in the species name.


Clark, B. L. & Campbell, A. S. (1942a). Eocene radiolarian faunas from the Mt. Diablo area, California. Geological Society of America, Special Papers. 39: 1-112. gs


Clathrocyclas universa amplaspina compiled by the radiolaria@mikrotax project team viewed: 4-12-2022

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