Classification: rads_cenozoic -> Actinommidae -> Actinommidae inc sed -> Pentactinosphaera
Sister taxa: << < Cromyechinus, Cromyomma, Diploplegma, Druppatractus, Drymosphaera, Drymyomma, Elatomma, Ellipsoxiphium, Gonosphaera, Heliaster, Heliosestilla, Hexacromyum, Hexalonche, Leptosphaera, Lychnosphaera, Pentactinosphaera, Rhizoplegma, Sphaeropyle, Spongodictyon, Spongoplegma, Stauroxiphos, Stigmosphaera, Stylacontarium, Stylatractus, Thecosphaerella, Xiphatractus
Daughter taxa (time control age-window is: 0-800Ma)
Pentactinosphaera hokurikuensis

neptune records:
Pentactinosphaera sp.

neptune records:


Citation: Pentactinosphaera Nagata and Nishimura, in Nakaseko et al. 1983
Rank: genus
Basionym: Pentactinosphaera

Catalog entries: Pentactinosphaera

Original description: Entirely globular, thick-walled shell with the pentactine spicule at the apical end and a spine at the antapical one, these hexactine spicule inserted in the latticed shell. The structure of the spicule shows text-figure 1.
Remarks on original description: [Nomen nudum ? in Nakaseko, Nagata and Nishimura, 1982, p. 70] [Junior synonym of NANINA]


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of Piacenzian Stage (100% up, 2.6Ma, in Piacenzian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Aquitanian Stage (0% up, 23Ma, in Aquitanian stage). Data source: Total of range of species in this database

Plot of occurrence data:


Nakaseko, K., Nagata, K. & Nishimura, A. (1983). Pentactinosphaera hokurikuensis (Nakaseko): a revised Early Miocene Radiolaria. Science Reports, College of General Education, Osaka University. 32: 31-37. gs


Pentactinosphaera compiled by the radiolaria@mikrotax project team viewed: 8-3-2021

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