CATALOG OF ORIGINAL DESCRIPTIONS: Spongurus bilobatus 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 -> S -> Spongurus -> Spongurus bilobatus
Other pages this level: S. biconstrictus, S. biconstrictus triangulatus, S. bilobatus, S. cauleti, S. crispus, S. crowleysensis, S. cylindricus, S. cylindricus jh, S. elongatus, S. illepidus, S. irregularis, S. occidentalis, S. ovatus, S. phalanga, S. pylomaticus, S. pylomaticus borealis, S. radians, S. saxeus, S. smithi, S. spatulaeformis, S. spongechinus, S. stoehri, S. stuparius, S. stypticus, S. tricolus, S. yatsuoensis

Spongurus bilobatus

Citation: Spongurus bilobatus Clark & Campbell 1942
Rank: species
Type specimens: pl.1, figs.7, 9
Type repository: University of California, Museum of Paleontology, San Francisco
Described on page(s) : p.36
Family (traditional): Spongodiscidae
Family (modern): Euchitoniidae

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Current identification/main database link: Spongurus bilobatus Clark & Campbell 1942


Original Description
Shell generally cylindrical, about 2 and a quarter times longer than wide, with two equal, equally spaced, rounded lobes, forming the two ends, the lobes being each about a fourth of the whole length, and the central region swells from their necks to its widest level at the middle; surface nearly smooth; spongy framework of the same structure throughout the whole except the edges of the midregion which are looser, generally the mesh compact; meshes much wider than the bars.

Length, 220µm; width across the widest part, 90µm; end knobs, 50 by 60µm, their necks, 20µm across. Distinguishing characters (rw): In form this species is like S. phalanga Haeckel (1887) but is somewhat plumper; the latter lacks the terminal lobes.

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

References:

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


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Spongurus bilobatus compiled by the radiolaria@mikrotax project team viewed: 24-11-2020

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