- Type images:
 spatulaeformis Clark and Campbell 1942.jpg)
type material: S. spatulaeformis
Catalog entries: Spongurus spatulaeformis
 spatulaeformis Clark and Campbell 1942.jpg)
type material: S. spatulaeformisOriginal description: Shell generally cylindrical, nearly three times longer than wide, with two equal, equidistant, angular, spatulalike lobes at the opposite ends, the ventral region as long as both lobes, this region not swollen, the necks separating lobes and midregion very dense, the reticulum being of similar structure through the whole shell, bars of the meshes very thin.
Length, 200µm; breadth, 50µm; lobes, 50 by 50µm, necks, 40µm. Distinguishing characters (rw): Spongurus spatulaeformis n. sp. resembles S. bilobatus n. sp. but has differently shaped lobes, these being inadequately shown in the photograph which was taken at a focus that does. not emphasize them, less swollen midregion, coarser mesh, and relatively thicker necks, separating the lobes and midregion.
Remarks on original description: [The authors here list this species under the subgeneric name Spongurantha and include the subgeneric name in the species name.
Geological Range:
Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group"
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"
Plot of occurrence data:
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. gsReferences:
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Spongurus spatulaeformis compiled by the radiolaria@mikrotax project team viewed: 22-3-2023
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205556 Go to Archive.is to create a permanent copy of this page - citation notes |