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Deflandrea quiriquinaensis
Deflandrea quiriquinaensis Takahashi, 1979
Now Cerodinium. Originally Deflandrea, subsequently (and now) Cerodinium.
Holotype: Takahashi, 1979, pl.1, figs.1a-c
Age: Late Cretaceous
Original description: Outer cyst large, more or less pentagonal in dorso-ventral view; length 75-100.2µ overall; width 63-79.7µ; outer cyst membrane smooth to irregularly granulate or punctate. Apical horn more than 10-17.5µ in length; antapical horns more than 25-30µ in length with left horn slightly longer than the right one; antapical horns tend to slightly diverge from each other- Inner cyst completely fills the outer one. Girdle wall developed by ridges, about 6-6.6µ in width. Furrow about 10-20µ wide and is bordered by more or less frilled border. Intercalary archeopyle large, usually outlines by a lateral oval in form.
Holotype: PI. 1, figs,la c; grain size- -outer cyst 100.2 x 79.7µ, inner cyst 58.8 x 76.3µ apical horn more than 17.5µ in length; antapical horns more than 30µ in length; girdle about 6.3/4 in width; slide GN 2418.
Occurrence: Few, Quiriquina Formation, Quiriquina Island, Chile.
Remarks: The present specimens are differentiated from Deflandrea dilwynensis Cookson & Eisenack from the Paleocene Pebble Point Formation, SW Victoria, Australia, by its larger size, its longer antapical horns, and a laterally oval form of archeopyle.
Now Cerodinium. Originally Deflandrea, subsequently (and now) Cerodinium.
Holotype: Takahashi, 1979, pl.1, figs.1a-c
Age: Late Cretaceous
Original description: Outer cyst large, more or less pentagonal in dorso-ventral view; length 75-100.2µ overall; width 63-79.7µ; outer cyst membrane smooth to irregularly granulate or punctate. Apical horn more than 10-17.5µ in length; antapical horns more than 25-30µ in length with left horn slightly longer than the right one; antapical horns tend to slightly diverge from each other- Inner cyst completely fills the outer one. Girdle wall developed by ridges, about 6-6.6µ in width. Furrow about 10-20µ wide and is bordered by more or less frilled border. Intercalary archeopyle large, usually outlines by a lateral oval in form.
Holotype: PI. 1, figs,la c; grain size- -outer cyst 100.2 x 79.7µ, inner cyst 58.8 x 76.3µ apical horn more than 17.5µ in length; antapical horns more than 30µ in length; girdle about 6.3/4 in width; slide GN 2418.
Occurrence: Few, Quiriquina Formation, Quiriquina Island, Chile.
Remarks: The present specimens are differentiated from Deflandrea dilwynensis Cookson & Eisenack from the Paleocene Pebble Point Formation, SW Victoria, Australia, by its larger size, its longer antapical horns, and a laterally oval form of archeopyle.