Subfamily Ptychodiscoideae

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Subfamily Ptychodiscoideae

Citation: Ptychodiscoideae (Autonym).

Diagnosis:Ptychodiscaceans in which cellulose is the principal component of the pellicle, and in which no apical opening is developed.

Type genus:

Ptychodiscus

Extant genera:

Balechina Loeblich Jr. and Loeblich III 1968.

Pachydinium

Kofoid and Swezy 1921

Balechina

Berghiella Kofoid and Michener 1911.
?Ceratoperidinium Margalef 1969 ex Loeblich III 1980.
Kolkwitziella Lindemann 1919.
?Lissaiella Lindemann 1928.
?Lophodinium Lemmermann 1910.
Ptychodiscus Stein 1883.
Sclerodinium Dodge 1981.

Family Ptychodiscaceae

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