Sphaeronitida - Aristocystitidae
Alternative spelling: Arystocystididae
Parent taxon: Sphaeronitida according to S. Sheffield and C. Sumrall 2017
See also Beaver et al. 1967, Gutiérrez-Marco and Colmenar 2011 and Paul et al. 2019
Sister taxa: Holocystitidae, Sphaeronitidae
Subtaxa: Amphoracystis Aristocystitinae Baculocystites Calicinae Calix Campylostoma Hippocystis Pachycalix Prokopius Pseudaristocystis Sinocystis Triamara
Ecology: stationary epifaunal suspension feeder
Distribution:
• Silurian of China (1 collection), United States (6: Illinois, Indiana)
• Dobrotivian of the Czech Republic (1), France (1), Morocco (1), Spain (10)
• Ordovician of Algeria (1), China (8), the Czech Republic (15), Iran (2), Morocco (7), Spain (6), Thailand (1)
• Tremadoc of Morocco (1)
Total: 61 collections including 78 occurrences