Subfamily PyrodinioideaeCitation: Pyrodinioideae Fensome et al., 1993b.
Diagnosis:Goniodomaceans in which the posterior sulcal homologue and right sulcal homologue are within the sulcus, and which have fossilizable cysts.
Type genus:Extant genus:Fossil genera:
Alisocysta Stover and Evitt, 1978; Paleocene (Danian).
Biconidinium Islam, 1983c; Early Eocene.
Capisocysta Warny and Wrenn, 1997; Miocene-Holocene.
Dinopterygium Deflandre, 1935; Late Cretaceous (Senonian).
Eisenackia Deflandre and Cookson, 1955; Paleocene-Early Eocene.
Eocladopyxis Morgenroth, 1966a; Early Eocene.
Geonettia de Verteuil and Norris, 1996b; Late Miocene.
Homotryblium Davey and Williams, 1966b; Early Eocene.
Hystrichosphaeridium Deflandre, 1937b; ?Late Cretaceous.
Polysphaeridium Davey and Williams, 1966b; Early Eocene.
?Taleisphaera Duxbury, 1979a; Cretaceous (Barremian).
Tubidermodinium Morgenroth, 1966a; Early Eocene.
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Parent: Family Goniodomaceae part 1