CATALOG OF ORIGINAL DESCRIPTIONS: Stylosphaera coronata sabaca Nishimura 1992
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Original Description Description: Shell resembling that of S. coronata coronata, but with cortical shell superficially thorny and more nearly spherical, and its wall "double" as a result of expansion of the pores between the inner and outer surfaces. Measurements (based on 20 specimens from 94-26-2 and 94-28-2). Major diameter of cortical shell 11O-135μ, its minor diameter 105-130μ. Remarks: The origin of the "double" cortical shell in this form is not in the usual manner, by joining of the branched ends of short spines as in the forms with "tertiary shells" described by Mast (1910), but by the bars separating the pores becoming thinner between the inner and outer surfaces of the thick shell wall. There is a superficial similarity to Cromyatractus tetracelyphus Haeckel (1887, p. 335, pi. 15, figs. 1, la). The subspecific name is derived from the Greek sabakos (feeble, rotten), an allusion to the apparent breakdown of the wall of the cortical shell. Etymology: macrosphaerais derived from the Latin meaning large sphere.
References:
Sanfilippo, A. & Riedel, W. R. (1973). Cenozoic Radiolaria (exclusive of theoperids, artostrobiids and amphipyndacids) from the Gulf of Mexico, Deep Sea Drilling Project Leg 10. Initial Reports of the Deep Sea Drilling Project. 10: 475-608. gsO
Stylosphaera coronata sabaca compiled by the radiolaria@mikrotax project teamviewed: 22-5-2025
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Stylosphaera coronata sabaca Sanfilippo and Riedel 1973.jpg
Stylosphaera coronata sabaca Sanfilippo and Riedel 1973a.jpg
Stylosphaera coronata sabaca Sanfilippo and Riedel 1973.jpg
Stylosphaera coronata sabaca Sanfilippo and Riedel 1973a.jpg
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