Didinium is a ciliate. The phylum is Ciliophora, the class is Litostomatea and the order is Haptorida. The family is Didiniidae. Didinim is a free living carnivore and lives in fresh and brackish waters.
Didinium belongs to the phylum Ciliophora and the class Litostomatea. Within this class they belong to the subclass Haptoria. Their order is Haptorida.
