radiolaria - rads_cenozoic - Stylosphaera coronata macrosphaera radiolaria - rads_cenozoic - Stylosphaera coronata macrosphaera

Stylosphaera coronata macrosphaera


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

Taxonomy

Citation: Stylosphaera coronata macrosphaera Nishimura 1992
Taxonomic rank: sub-species
Basionym: Stylosphaera coronata macrosphaera

Catalog entries: Stylosphaera coronata macrosphaera

Original description: Shell consists of two shells; one outer and one inner shell. Outer shell globular, quite large, thick-walled, smooth-surfaced with rosette-shaped pores regular in size and form. Inner shell bit pear-shaped, delicate. Polar spines three-bladed in cross-section, dissimilar in size; one very short, the other longer, slightly curved. Some specimens often have short spines in the equatorial plane.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

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:

References:


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Stylosphaera coronata macrosphaera compiled by the radiolaria@mikrotax project team viewed: 18-7-2025

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205683 Go to Archive.is to create a permanent copy of this page - citation notes



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