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Deflandrea korojonensis
Deflandrea korojonensis Cookson and Eisenack, 1958
Now Isabelidinium. Originally Deflandrea, subsequently (and now) Isabelidinium. See also Isabelia (combination illegitimate).
Holotype: Cookson and Eisenack, 1958, pl.4, fig.10
Locus typicus: Korojon Calcarenite, Carnavon Basin, Australia
Stratum typicum: Campanian-Early Maastrichtian
Original description: Cookson and Eisenack, 1958, p.28
Theca rather variable in outline, typically somewhat quadrangular, with convex sides which become concave beneath the broadly rounded or bracket-shaped apex and narrow gradually towards a more or less truncate antapex, sometimes one side is prolonged as an abbreviated horn; a transverse furrow is not indicated. The capsule fills the theca laterally and is usually broader than long; a slightly polygonal pylome is present near its anterior end. The membrane of the theca is smooth, that of the capsule faintly granular.
Dimensions: Type - theca 71 x 52 µm; capsule 38 x 50 µm. Range - theca 61-80 x 38-53 µm; capsule 32-42 x 36-50 µm.
Now Isabelidinium. Originally Deflandrea, subsequently (and now) Isabelidinium. See also Isabelia (combination illegitimate).
Holotype: Cookson and Eisenack, 1958, pl.4, fig.10
Locus typicus: Korojon Calcarenite, Carnavon Basin, Australia
Stratum typicum: Campanian-Early Maastrichtian
Original description: Cookson and Eisenack, 1958, p.28
Theca rather variable in outline, typically somewhat quadrangular, with convex sides which become concave beneath the broadly rounded or bracket-shaped apex and narrow gradually towards a more or less truncate antapex, sometimes one side is prolonged as an abbreviated horn; a transverse furrow is not indicated. The capsule fills the theca laterally and is usually broader than long; a slightly polygonal pylome is present near its anterior end. The membrane of the theca is smooth, that of the capsule faintly granular.
Dimensions: Type - theca 71 x 52 µm; capsule 38 x 50 µm. Range - theca 61-80 x 38-53 µm; capsule 32-42 x 36-50 µm.