†family Caryocystitidae Jaekel 1918
Parent taxon: Caryocystitida according to J. F. Bockelie 1982
See also Beaver et al. 1967, Bockelie 1981 and Regnéll 1945
Sister taxon: Ulrichocystidae
Subtaxa: Caryocystites Heliocrinites Orocystites Stichocystis Ulrichocystis
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Uhaku of Sweden (2 collections)
• Ordovician of Algeria (1), Belgium (2), the Czech Republic (2), Estonia (1), Iran (1), Latvia (1), Lithuania (1), Morocco (3), Norway (3), Portugal (2), Spain (7), Sweden (39), the United Kingdom (1), United States (8: Kentucky, Tennessee, Virginia)
Total: 74 collections including 104 occurrences