Subfamily Helgolandinioideae
From dinoflaj2
| 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. |
