Subfamily Gonyaulacoideae

Subfamily Gonyaulacoideae

Citation: Gonyaulacoideae (Autonym). Diagnosis:Gonyaulacaceans with an S-type ventral organization, typically neutral torsion and three or four climactal plates excluding small dorsal anterior intercalary plates (so-called "incidental plates"), where present. Of these climactal plates, the first apical homologue (*1\') is reduced or absent. There are six Kofoid precingular plates. Type genus: Gonyaulax Diesing 1866. Extant genera: Acanthogonyaulax ( Kofoid 1911) Graham 1942. Amylax Meunier 1910. Gonyaulax Diesing 1866. (=Roulea Gourret 1883; taxonomic junior synonym according to Schiller, 1935b, p.275) (=Steiniella Schütt 1895; taxonomic junior synonym by general consensus) Spiraulax Kofoid 1911b. (=Spiraulaxina Loeblich III 1970; taxonomic junior synonym according to Taylor, 1976a, p.111) Fossil genera: Achomosphaera Evitt 1963; Late Cretaceous. Ataxiodinium Reid 1974; Holocene. ?Avellodinium Duxbury 1977; Cretaceous (Berriasian-Barremian). Bitectatodinium Wilson 1973; Mid Pleistocene. (=Caledonidinium Reid 1974; taxonomic junior synonym according to Harland, 1977b, p.93) ?Cannosphaeropsis O. Wetzel 1933b; Cretaceous (Senonian). ?Catastomocystis C. Singh 1983; Cretaceous (Cenomanian). Chaenosphaerula Damassa 1997; Late Oligocene. Corrudinium Stover and Evitt 1978; Oligocene. Dalella McMinn and Sun Xuekun 1994; Holocene. Daveya Monteil 1996; Cretaceous (Ryazanian). ?Ectosphaeropsis Londeix and Jan du Chêne 1988; Miocene (Burdigalean). Edwardsiella Versteegh and Zevenboom in Versteegh 1995; Oligocene-Pliocene (Chattian-Piacenzian). Evittosphaerula Manum 1979; Mid Oligocene-Early Miocene. Exiguisphaera Duxbury 1979a; Cretaceous (Hauterivian). Flandrecysta Slimani 1994; Cretaceous (Campanian-Maastrichtian). Hafniasphaera Hansen 1977; Paleocene (Danian). (=Rivernookia Cookson and Eisenack 1982; taxonomic junior synonym according to Lentin and Williams, 1985, p.311) Hystrichosphaeropsis Deflandre 1935; Cretaceous (Senonian). ?Hystrichostrogylon Agelopoulos 1964; Late Eocene. Impagidinium Stover and Evitt 1978; Late Eocene. Nematosphaeropsis Deflandre and Cookson 1955; Holocene. (=Coccopterum Silva 1970; taxonomic junior synonym - type is now inNematosphaeropsis ) (=Pterococcus Lohmann 1904; homonym -Coccopterum is substitute) ?Okerisphaeridium Kunz 1990; Jurassic (Oxfordian) Pentadinium Gerlach 1961; Mid Oligocene-Mid Miocene. (=Planinosphaeridium Eisenack 1965b; taxonomic junior synonym according to Stover and Evitt 1978, p.179-180) (=Toenisbergia Benedek et al. 1982; taxonomic junior synonym according to Lentin and Williams, 1985, p.356) Piccoladinium Versteegh and Zevenboom in Versteegh 1995; Oligocene-Pliocene (Chattian-Piacenzian). Prionodinium Leffingwell and Morgan 1977; Cretaceous (Neocomian). Psaligonyaulax Sarjeant 1966b; Cretaceous (Cenomanian). Pterodinium Eisenack 1958a; Cretaceous (Aptian). Rottnestia Cookson and Eisenack 1961b; Early Oligocene. Seriliodinium Eaton 1996; Pliocene-Pleistocene. Spiniferites Mantell 1850; Late Cretaceous. (=Hystrichokibotium Klumpp 1953; taxonomic junior synonym implied in Gocht, 1969, p.32) (=Hystrichosphaera O. Wetzel 1933b; taxonomic junior synonym according to Sarjeant, 1970, p.75) Tectatodinium Wall 1967; Miocene-Holocene. Trabeculidium Duxbury 1980; Cretaceous (Barremian). ?Triblastula O. Wetzel 1933b; Late Cretaceous. Tubotuberella Vozzhennikova 1967; Late Jurassic. (=Dimidiadinium Brideaux 1977; taxonomic junior synonym - see Lentin and Williams, 1989, p.106 (=Glabridinium Brideaux 1977; taxonomic junior synonym according to Sarjeant, 1982b, p.41) Turnhosphaera Slimani 1994; Cretaceous (Santonian). Unipontidinium Wrenn 1988; Mid Miocene. Wilsonisphaera Slimani 1994; Cretaceous (Senonian). (=Glaphyrosphaera Schiøler and Wilson 1994; taxonomic junior synonym according to Schiøler and Wilson, 1995, p.511) Wrevittia Helenes and Lucas-Clark 1997; Cretaceous (Neocomian-Aptian). Other names: (Imperfectodinium Zevenboom and Santarelli in Zevenboom 1995; name not validly published)

Family Gonyaulacaceae