Extant genera:
Micracanthodinium Deflandre 1937a. Protodinium Lohmann 1908. Pseliodinium Sournia 1972b. Zoorhabdella Rhumbler 1909. Zooxanthella Brandt 1881.
Cobricosphaeridium Harland and Sarjeant 1970; Holocene. Diacrocanthidium Deflandre and Foucher 1967; Late Cretaceous. Prolixosphaeridium Davey et al. 1966; Cretaceous (Aptian). Suibindia Yu Jingxian 1982; Late Jurassic-Early Cretaceous. Xylochoarion Erkmen and Sarjeant 1978; Jurassic (Callovian).
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