Subfamily Chonelasmatinae Schrammen 1912 (glass sponge)
Hexactinellida - Hexactinosa - Euretidae
Parent taxon: Euretidae according to R. M. Finks et al. 2004
Sister taxa: Belonisia, Eotretochone, Euretinae, Heterorete, Paleoramospongia, Paleoregulara, Pararete, Polythyridinae, Pseudobecksiinae, Verrucocoeloidea
Subtaxa: Balantionella Chonelasma Eubrochis Habrosium Megalodictyon Ptychorete Tretochone Typhlopleura Wollemannia
Ecology: stationary epifaunal suspension feeder
Distribution:
• Paleocene to Eocene of New Zealand (1 collection)
• Cretaceous of Germany (4), Poland (1), the United Kingdom (9)
• Jurassic of Germany (2)
Total: 17 collections including 23 occurrences