Difference between revisions of "Subfamily Helgolandinioideae"

Diagnosis:Goniodomaceans with either or both of the following characters: 1) the tabulation has more than the typical goniodominean number of plates in at least two plate series; 2) within the life-cycle there is a nonpreservable smooth cellulosic cyst with a chasmic archeopyle.

Helgolandinium von Stosch 1969.

Alexandrium Halim 1960a.


(=Gessnerium Halim 1967 ex Halim 1969; taxonomic junior synonym according to Balech, 1990b)


(=Protogonyaulax Taylor 1979; taxonomic junior synonym according to Balech, 1985b)



Fragilidium Balech 1959 ex Loeblich III 1965.
Helgolandinium von Stosch 1969.
Pyrophacus Stein 1883.

Tuberculodinium Wall 1967; Pleistocene.