A list of families, genera, and synonyms of Chitinozoa, is given. The families Conochitinidae and Desochitinidae, are recognized as emended by Taugourdeau (1966), as is his new family Ancryochitinidae. The family Lagenochitinidae is restricted from Taugourdeau's emendation, and the family Hoegisphaeridae is reinstated.