radiolaria - rads_cenozoic - Spirema circularis

Spirema circularis

Classification: rads_cenozoic -> Pyloniidae -> Spirema -> Spirema circularis
Sister taxa: S. circularis, S. melonia, S. sp.


Citation: Spirema circularis Nakaseko in Nakaseko and Sugano 1973
Rank: species
Basionym: Spirema circularis

Taxonomic discussion:
Nakaseko in Nakaseko & Sugano 1973, pl.1, fig.5 ; Unknown nomen nudum

Catalog entries: S. circularis [no catalog entry yet]


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"

Plot of occurrence data:


Nakaseko, K & Sugano, K. (1973). Neogene radiolarian zonation in Japan. Memoirs of the Geological Society of Japan. 8: 23-33. gs


Spirema circularis compiled by the radiolaria@mikrotax project team viewed: 21-9-2021

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