CATALOG OF ORIGINAL DESCRIPTIONS: Stylosphaera datura Clark & Campbell 1945
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Stylosphaera (Stylosphaerella) datura Clark and Campbell 1945.jpg
Stylosphaera datura
Citation: Stylosphaera datura Clark & Campbell 1945Taxonomic rank: speciesDescribed on page(s) : p.12, figs.23Type locality: LL598
Current identification:
Original Description Shell spherical with 2 similar, equal, opposite polar spines in 1 axis, these spines long (about the same as the diameter of the cortical shell), with similar 3-bladed prismatic, narrow, thin-edged, straight, terminally sharp, triangular blades with very little basal flare; cortical shell having long (0.33 length of polar spines), thin, sharp, usually straight, needlelike by-spines which arise as sepaloid points from the nodes of the polygonal framework so that the whole surface is exceedingly spiny; medullary shell globular, small (only 0.35 diameter of cortical shell), and spported by at least a dozen rather stout, prismatic radial beams; pores of cortical shell large, not numerous (about a dozen across a diameter), strictly circular, and rather deeply set into the thick, raised subhexagonal meshwork, everywhere similar in size and form; pores of medullary shell few (not more than 5 across a diameter), similarly circular and regular in size, within heavy hexagonal meshes. Size: Length of polar spines 153µm, of by-spines 43µm; diameter of cortical shell 150µm, of medullary shell 46µm, of cortical pores 10µm. Etymology: No information given Extra details from original publication Distinguishing features:Stylosphaera datura n. sp. has longer by-spines than other species and recalls, in this respect, Staurolonche tetraxyphos n. sp., which differs from it in larger size and in having more main-spines.
Editors' Notes Tha authors here list Stylosphaera datura under the subgeneric name Stylosphaerella and include the subgeneric name in the species name.[comment from RadWorld database]
References:
Clark, B. L. & Campbell, A. S. (1945b). Radiolaria from the Kreyenhangen Formation near Los Banos, California. Geological Society of America, Memoir. (10): 1-66. gs
Stylosphaera datura compiled by the radiolaria@mikrotax project teamviewed: 22-5-2025
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