†family Coeloptychidae Roemer 1864 (glass sponge)
Hexactinellida - Lychniscosa - Coeloptychidae
Parent taxon: Lychniscosa according to R. M. Finks et al. 2004
Sister taxa: Aulophax, Callodictyidae, Callodictyonidae, Calyptrellidae, Camerospongiidae, Cavispongia, Cypelliidae, Dactylocalycidae, Dracolychnus, Etheridgea, Leucopsacasiidae, Pachyrachis, Pachyteichismatidae, Plectascus, Polyblastidiidae, Rhizopoteronopsis, Rhizopterion, Sclerokalia, Sestrocladia, Sporadopylidae, Ventriculitidae, Xylospongia, Triadocoelia
Subtaxa: Cameroptychinae Coeloptychinae
Type: Coeloptychium
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cretaceous of France (1 collection), Germany (11), Greece (1), Poland (12), the United Kingdom (10)
Total: 35 collections including 62 occurrences