radiolaria - rads_cenozoic - Stylosphaera coronata laevis radiolaria - rads_cenozoic - Stylosphaera coronata laevis

Stylosphaera coronata laevis


Classification: rads_cenozoic -> Actinommidae -> Stylosphaeridae -> Stylosphaera -> Stylosphaera coronata -> Stylosphaera coronata laevis
Sister taxa: S. coronata coronata, S. coronata laevis, S. coronata macrosphaera, S. coronata sabaca

Taxonomy

Citation: Stylosphaera coronata laevis
Taxonomic rank: sub-species

Catalog entries: S. coronata laevis [no catalog entry yet]

Description


Published descriptions


Sanfilippo and Riedel 1973 - Stylosphaera laevis

Shell resembling Stylosphaera coronata coronata, but with cortical shell thinner-walled and with smoother surface, and spines longer, evenly tapering. Measurements (based on 30 specimens from 97-17-2 and 94-22-4): major diameter of cortical shell 75-100, its minor diameter 65-80µ. Length of the longer spine 70-125µ.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage). Data source:
First occurrence (base): within (-Ma, base in "Holocene" stage). Data source:

Plot of occurrence data:

References:

Abelmann, A. (1990). Oligocene to Middle Miocene radiolarian stratigraphy of southern high latitudes from Leg 113, Sites 689 and 690, Maud Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 113: 675-708. gs

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. gs O

Missing or ambiguous references: Chen 1975; Ehrenberg 1873; Ehrenberg 1875;


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Stylosphaera coronata laevis compiled by the radiolaria@mikrotax project team viewed: 8-7-2025

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