Citation: Leptodiscaceae Taylor 1976a.
Diagnosis: Noctilucaleans in which the dominant life cycle stage comprises a motile cell whose width is extended significantly by anterior-posterior compression or by the presence of an equatorial, wing-like extension. Neither a tentacle nor an episomal extracellular dome, are developed. Type genus: Leptodiscus Hertwig 1877.
Abedinium Loeblich Jr. and Loeblich III 1966.
Cachonodinium Loeblich III 1980.
Craspedotella Kofoid 1905. Cymbodinium J. Cachon and M. Cachon 1967a. Leptodiscus Hertwig 1877.
Petalodinium J. Cachon and M. Cachon 1969b. Scaphodinium Margalef 1963.
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