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†family Rhizosphaeridae Haeckel 1881 (radiolarian)

Protozoa - Entactinaria - Rhizosphaeridae

Parent taxon: Entactinaria according to P. De Wever et al. 2001

Sister taxa: Aciferopylorum, Braginella, Centrocubidae, Cromyostylus, Cyclocarpus, Ellisus, Entactiniidae, Eptingiidae, Haplentactiniidae, Helioentactinia, Heptacladidae, Hexalonchidae, Hexastylidae, Hindeosphaeridae, Hollandocachoniidae, Inaniguttidae, Induropilarius, Isometractiniidae, Kahlerosphaera, Kungalariidae, Multiarcusellidae, Odoghertitidae, Palaeolithocycliidae, Palaeopentactinorbis, Palaeoscenidiidae, Paleoxiphosphaera, Pentactinocarpidae, Polyentactiniidae, Protoentactiniacea, Proventocitidae, Pylentonemidae, Quinquecapsulariidae, Radium, Saturnalidae, Spongoentactinella, Spongosaturnaloididae, Staurolonchidium, Stylodiscus, Tetrentactiniidae, Thalassothamnidae, Triposphaera, Triumbraculidae

Subtaxa: Elatommura Haliommilla Rhizosphaera

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Type: Rhizosphaera

Ecology: passively mobile planktonic omnivore

Distribution:

• Quaternary of Japan (8 collections)

• Jurassic of Italy (2)

Total: 10 collections each including a single occurrence

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