†family Kirkocystidae Caster 1952
Stylophora - Mitrata - Kirkocystidae
Parent taxon: Peltocystida according to S.-B. Lee et al. 2006
See also Beaver et al. 1967, Kolata et al. 1991, Lefebvre 2001, Parsley 1991 and Parsley et al. 2000
Sister taxa: Jaekelocarpidae, Peltocystidae, Peltocystis, Taebaekocystis
Subtaxa: Anatifopsis Balanocystites Sagittacystis
Ecology: passively mobile epifaunal suspension feeder
Distribution:
• Dobrotivian of the Czech Republic (1 collection), France (1), Morocco (1), Spain (1)
• Letna of the Czech Republic (1)
• Arenig of France (2), the United Kingdom (1)
• Ordovician of the Czech Republic (12), France (2), Morocco (5), Sweden (1), the United Kingdom (5), United States (6: Oklahoma)
Total: 39 collections including 46 occurrences