radiolaria - rads_cat - Lithocampana lithoconella radiolaria - rads_cat - Lithocampana lithoconella

CATALOG OF ORIGINAL DESCRIPTIONS: Lithocampana lithoconella 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 -> L -> Lithocampana -> Lithocampana lithoconella
Other pages this level: L. lithoconella

Lithocampana lithoconella

Citation: Lithocampana lithoconella Clark & Campbell 1942
Taxonomic rank: species
Described on page(s) : p.66
Type specimens: pl.9, fig.24
Type repository: University of California, Museum of Paleontology, San Francisco
Family (traditional): Plagiacanthidae
Family (modern): Lophophaenidae

Current identification/main database link: Lithocampana lithoconella Clark & Campbell 1942


Original Description

Shell bell-shaped with wide, conical or campanulate thorax; apical horn fairly short, about 0.2 total length, generally spear- or spikelike, conical, circular in cross section, with sharp tip; cephalis subhemispherical with its base very much wider than its altitude, separated from the thorax mainly by slight change in contour, practically no stricture, only 0.5 as long as the horn; thorax elongate-truncate conical (approximately 35°), with apical truncation, sides somewhat different, a little convex, tending to become semicylindrical in the apertural 0.25; apertural margin irregular, not toothed; cephalis hyaline or at the most with a few, scattered, tiny pores; thorax with over a hundred, fairly uniform, scattered, elongate-ovate, minutely double-contoured, well-spaced pores; framework not especially dense; wall thin, thinnest in lower thorax.

Length of shell, 98.0µm; of horn, 21.0µm; of cephalis, 12.2µm; breadth of base of cephalis, 21.0µm; of aperture, 40.8µm; diameter of pores, about 8.8µm, or less.

References:

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


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Lithocampana lithoconella compiled by the radiolaria@mikrotax project team viewed: 11-6-2026

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