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Gonyaulacysta edwardsii
Gonyaulacysta edwardsii (Cookson and Eisenack, 1958) Clarke and Verdier, 1967
Now Cribroperidinium. Originally Gonyaulax, subsequently Gonyaulacysta, thirdly (and now) Cribroperidinium.
Taxonomic junior synonyms: Gonyaulax (as Cribroperidinium) apione, according to Burger (1980a, p.82) — however, Jan du Chêne et al. (1986a, p.76) retained Cribroperidinium apione; Gonyaulax (as Cribroperidinium) orthoceras, according to Davey and Verdier (1971, p.17) — however, Below (1981a, p.39–40) and Lentin and Williams (1985, p.79) retained Cribroperidinium orthoceras.
This combination was not validly published in Sarjeant (1966b, p.130), since that author did not fully reference the basionym.
Holotype: Cookson and Eisenack, 1958, pl.3, fig.6, text-fig.7; Jan du Chêne et al., 1986, pl.32, fig.4; pl.33, fig.3
Paratypes: Cookson and Eisenack, 1958
Locus typicus: Gearle Siltstone, Carnarvon Basin, W-Australia
Stratum typicum: Albian-Early Turonian
Original description: Cookson and Eisenack, 1958, p.32-33: Gonyaulax edwardsii
Shell nearly sphaerical, thick walled. Epitheca with a long, stiff, pointed and sometimes curved horn. Girdle helicoid, narrow with low borders; longitudinal furrow broad. Plates finely granular, the inner surface of girdle sometimes more coarsely granular than plates. Sutures of the plates with low, thin ledges which often bear a few rather broad, pointed spines especially in the apical and antapical regions. Dimensions: Type 143x125 µm overall.
Now Cribroperidinium. Originally Gonyaulax, subsequently Gonyaulacysta, thirdly (and now) Cribroperidinium.
Taxonomic junior synonyms: Gonyaulax (as Cribroperidinium) apione, according to Burger (1980a, p.82) — however, Jan du Chêne et al. (1986a, p.76) retained Cribroperidinium apione; Gonyaulax (as Cribroperidinium) orthoceras, according to Davey and Verdier (1971, p.17) — however, Below (1981a, p.39–40) and Lentin and Williams (1985, p.79) retained Cribroperidinium orthoceras.
This combination was not validly published in Sarjeant (1966b, p.130), since that author did not fully reference the basionym.
Holotype: Cookson and Eisenack, 1958, pl.3, fig.6, text-fig.7; Jan du Chêne et al., 1986, pl.32, fig.4; pl.33, fig.3
Paratypes: Cookson and Eisenack, 1958
Locus typicus: Gearle Siltstone, Carnarvon Basin, W-Australia
Stratum typicum: Albian-Early Turonian
Original description: Cookson and Eisenack, 1958, p.32-33: Gonyaulax edwardsii
Shell nearly sphaerical, thick walled. Epitheca with a long, stiff, pointed and sometimes curved horn. Girdle helicoid, narrow with low borders; longitudinal furrow broad. Plates finely granular, the inner surface of girdle sometimes more coarsely granular than plates. Sutures of the plates with low, thin ledges which often bear a few rather broad, pointed spines especially in the apical and antapical regions. Dimensions: Type 143x125 µm overall.