Subfamily Leptodinioideae

Subfamily Leptodinioideae

Citation: Leptodinioideae Fensome et al. 1993b. Diagnosis:Gonyaulacaceans in which there is an L-type ventral organization, neutral torsion to sinistral torsion and four climactal plates, not counting small dorsal anterior intercalary plates (so-called "incidental plates"), which may or may not be present. Type genus: Leptodinium Klement 1960; fossil - Jurassic (Kimmeridgian). Fossil genera: Acanthaulax Sarjeant 1968; Jurassic (Oxfordian-Kimmeridgian). (=Acanthogonyaulax Sarjeant 1966b; homonym -Acanthaulax is substitute) Ambonosphaera Fensome 1979; Jurassic (Callovian). Amphorula Dodekova 1969; Jurassic (Tithonian). Areosphaeridium Eaton 1971; Eocene. Carpodinium Cookson and Eisenack 1962b; Cretaceous (Albian). Cernicysta Stover and Helby 1987d; Cretaceous (Aptian-Albian). ?Clathroctenocystis Wiggins 1972; Cretaceous (Neocomian). ?Conosphaeridium Cookson and Eisenack 1969; Cretaceous (Albian-Cenomanian). Cooksonidium Stover and Williams 1995; Late Eocene. Ctenidodinium Deflandre 1939a; Jurassic (Oxfordian). (=Hystrichogonyaulax Sarjeant 1969; taxonomic junior synonym according to Jan du Chêne et al., 1985a, p.110) Cymososphaeridium Davey 1982b; Cretaceous (Hauterivian). Diacanthum Habib 1972; Cretaceous (?Valanginian). Dichadogonyaulax Sarjeant 1966b; Jurassic (Portlandian). (=Brotzenia Horowitz 1975; taxonomic junior synonym according to Wheeler and Sarjeant, 1990, p.306-307) Durotrigia Bailey 1987; Jurassic (Bajocian). Eatonicysta Stover and Evitt 1978; Early Eocene. ?Egmontodinium Gitmez and Sarjeant 1972; Jurassic (Kimmeridgian). Emmetrocysta Stover 1975; Oligocene. Endoscrinium ( Klement 1960) Vozzhennikova 1967; Jurassic (Oxfordian). (=Athigmatocysta Duxbury 1977; taxonomic junior synonym according to Below, 1981a, p.48) ?Energlynia Sarjeant 1976b; Jurassic (Bathonian). Eodinia Eisenack 1936; Jurassic (Callovian). Gonyaulacysta Deflandre 1964; Jurassic (Oxfordian). Herendeenia Wiggins 1969; Late Jurassic. Kleithriasphaeridium Davey 1974; Cretaceous (Barremian). (=Diversispina Benson 1976; taxonomic junior synonym according to Stover and Evitt 1978, p.167-168) Lanterna Dodekova 1969; Jurassic (Tithonian). Leptodinium Klement 1960; Jurassic (Kimmeridgian). Limbodinium Riding 1987b; Jurassic (Callovian). Lithodinia Eisenack 1935; Jurassic (Callovian). ?Litosphaeridium Davey and Williams 1966b; Cretaceous (Albian-Cenomanian). Lophocysta Manum 1979; Early Miocene. Meiourogonyaulax Sarjeant 1966b; Jurassic (Bathonian). Membranigonyaulax Slimani 1994; Cretaceous (Campanian-Maastrichtian). Nidarocysta Monteil 1997; Jurassic (Oxfordian-Kimmeridgian). Occisucysta Gitmez 1970; Jurassic (Kimmeridgian). ?Ochetodinium Damassa 1979a; Early-Mid Eocene. Oligosphaeridium Davey and Williams 1966b; Cretaceous (Senonian). Omatia Cookson and Eisenack 1958; Late Jurassic. ?Perisseiasphaeridium Davey and Williams 1966b; ?Early Eocene. Rhynchodiniopsis Deflandre 1935; Cretaceous (Senonian). Rigaudella Below 1982b; Jurassic (Oxfordian). Rotosphaeropsis Davey 1988; Cretaceous (Valanginian). Semicavidinium Dodekova 1994; Jurassic (Kimmeridgian). Sirmiodinium Alberti 1961; Cretaceous (Hauterivian-Barremian). Spiniferella Stover and Hardenbol 1994; Mid Oligocene-Mid Miocene. Stanfordella Helenes and Lucas-Clark 1997; Jurassic-Cretaceous (Tithonian-Valanginian). ?Stiphrosphaeridium Davey 1982b; Late Jurassic. Systematophora Klement 1960; Jurassic (Kimmeridgian). (=Polystephanosphaera Sarjeant 1960a; taxonomic junior synonym according to Sarjeant, 1961b, p.1095-1096) Tehamadinium Jan du Chêne et al. 1986b; Cretaceous (Valanginian). ?Wanaea Cookson and Eisenack 1958; Jurassic (Oxfordian). ?Willeidinium Feist-Burkhardt 1995a; Jurassic (Bajocian-Bathonian). Other names: (Ectosphaeridium Zevenboom and Santarelli in Zevenboom 1995; name not validly published)

Family Gonyaulacaceae part