CATALOG OF ORIGINAL DESCRIPTIONS: Clathrocyclas universa grandis 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.
Clathrocyclas (Clathrocyclia) universa grandis Clark and Campbell 1942.jpg
Clathrocyclas universa grandis
Citation: Clathrocyclas universa grandis Clark & Campbell 1942taxonomic rank: sub-speciesDescribed on page(s) : p.88Type specimens: pl.7, fig.18Type repository: University of California, Museum of Paleontology, San FranciscoFamily (traditional): TheoperidaeFamily (modern): Theopilidae
Current identification:
Original Description Shell generally tall, conical, with flaring abdomen and rodlike apical horn; apical horn broken off near the base; cephalis narrow conical (about 48°), about 0.75 as high as wide at the base, the sides practically plane, and the base continues with the thorax in contour; thorax conical (38°), its sides not significantly convex, somewhat contracted in the lower portion, this level being 0.64 total length of the shell (without the horn); abdomen an inverted, truncate, basal segment of a cone (45°) with a length of 0.38 total length (exclusive of the horn), and the sides are virtually plane; apertural margin with about twenty-two prongs or feet, these feet terminally truncate, sub-triangular, lamellalike, more or less equal and subequidistant; wall and surface as in C. universa undella n. subsp., save that the abdominal pores occur in two rows, the lower row of larger pores, these rectangular, often squarish, or elongated in the direction of the major shell-axis. Size: Length of shell, 177µm; diameter of aperture, 117µm; of largest abdominal pores, 26.6µm. Etymology: Latin "grandis" (-is, e) = sophisticated Extra details from original publication Distinguishing characters: This variety differs from C. universa cylindrica n. var. in flaring skirtlike abdomen, thinner horn, and very different lateral contours, from C. universa longispina n. subsp. in longer abdomen. Editors' Notes [The authors here list this species under the subgeneric name Clathrocyclia and include the subgeneric name in the species name.
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
Clathrocyclas universa grandis compiled by the radiolaria@mikrotax project teamviewed: 5-12-2024
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 universa grandis Clark and Campbell 1942.jpg)
Clathrocyclas (Clathrocyclia) universa grandis Clark and Campbell 1942.jpg universa grandis Clark and Campbell 1942.jpg)
Clathrocyclas (Clathrocyclia) universa grandis Clark and Campbell 1942.jpg
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