Subfamily Helgolandinioideae
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| Citation: Helgolandinioideae Fensome et al., 1993b. 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.
Fragilidium Balech, 1959 ex Loeblich III, 1965. Tuberculodinium Wall, 1967; Pleistocene. |
Parent: Family Goniodomaceae part 1