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)

Parent: Family Gonyaulacaceae part