Difference between revisions of "Subfamily Leptodinioideae"

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.

Leptodinium Klement 1960; fossil - Jurassic (Kimmeridgian).

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).

(Ectosphaeridium Zevenboom and Santarelli in Zevenboom 1995; name not validly published)