Diagnosis:Blastodinialeans in which the parasitic stage is invasive and does not clearly exhibit a typical dinoflagellate form. Sporogenesis is by palintomy. Cyst stages are absent.
Amyloodinium E.M. Brown and Hovasse 1946.
?Bargoniella Loeblich Jr. and Tappan 1961.
Crepidoodinium Lom and Lawlor in Lom 1981.
Oodinium Chatton 1912.
Piscinoodinium Lom 1981.