Polycystina - Entactinaria - Hexalonchidae
Parent taxon: Entactinaria according to P. De Wever et al. 2001
Sister taxa: Braginella, Centrocubidae, Cyclocarpus, Ellisus, Entactiniidae, Eptingiidae, Haplentactiniidae, Helioentactinia, Heptacladidae, Hexastylidae, Hindeosphaeridae, Hollandocachoniidae, Inaniguttidae, Isometractiniidae, Kahlerosphaera, Kungalariidae, Multiarcusellidae, Odoghertitidae, Palaeolithocycliidae, Palaeoscenidiidae, Paleoxiphosphaera, Pentactinocarpidae, Polyentactiniidae, Protoentactiniacea, Proventocitidae, Pylentonemidae, Quinquecapsulariidae, Radium, Rhizosphaeridae, Saturnalidae, Spongosaturnaloididae, Tetrentactiniidae, Thalassothamnidae, Triumbraculidae
Subtaxa: Heterosoma Hexacontium Hexalonche Hollandosphaera Nanina Tetrapetalon
Type: Hexalonche
Ecology: passively mobile planktonic omnivore
Distribution:
• Cretaceous of Oman (2 collections)
• Jurassic of Antarctica (5), Italy (1), Japan (8)
• Triassic of Italy (2)
Total: 18 collections including 46 occurrences