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Epelidinium normandiense
Epelidinium normandiense Iakovleva, 2016, p.9 (on PDF initially published online), pl.7, figs.4–5; text-fig.4a (part).
Holotype: Iakovleva, 2016, pl.7, figs.4–5.
Age: earliest Eocene.
Original description (Iakovleva, 2016):
Epelidinium normandiense sp. nov. Plate 7, figures 4 5; Figure 4a
Holotype. Plate 7, figures 4 5; slide MPA 62304-3; England Finder reference U12/2.
Type stratum and locality. Sample SMA 2-53, 13 m depth; Sotteville-sur-Mer Member; BRGM Scientific Borehole SiegeMadame-2, Dieppe-Hampshire Basin, France.
Diagnosis. A circumcavate species of Epelidinium with a smooth periphragm and discontinuous low-relief narrow folds, some of which appear to be sutural.
Description. A thin-walled mid-size circumcavate cyst with a rounded-pentagonal outline. The apical and lateral horns are indicated by slight bulges; the antapical horns are short. The periphragm is thin. Endocyst ovoidal; endophragm thin and smooth. The tabulation is partially indicated by the archaeopyle and a few low-relief, narrow parasutural folds. Archaeopyle equiepeliform; operculum free.
Dimensions. Holotype: pericyst length 77 µm; pericyst width 76 µm; endocyst length 61 µm; endocyst width 63 µm. Dimensions of measured specimens: pericyst length 77-82 µm (mean value 79 µm): pericyst width 76-82 µm (mean value 79 µm); endocyst length 61-71 µm (mean value 66 µm); endocyst width 63-69 µm (mean value 66 µm). Two specimens measured.
Comparison. Epelidinium normandiense differs from other Epelidinium species in its smaller size, significantly reduced apical and antapical horns and in the narrow, discontinuous, low-relief folds, only some of which appear to be sutural. Stratigraphical range. Earliest Eocene. Derivation of name. From Normandy, the French geographical region from which the holotype was recovered.
Holotype: Iakovleva, 2016, pl.7, figs.4–5.
Age: earliest Eocene.
Original description (Iakovleva, 2016):
Epelidinium normandiense sp. nov. Plate 7, figures 4 5; Figure 4a
Holotype. Plate 7, figures 4 5; slide MPA 62304-3; England Finder reference U12/2.
Type stratum and locality. Sample SMA 2-53, 13 m depth; Sotteville-sur-Mer Member; BRGM Scientific Borehole SiegeMadame-2, Dieppe-Hampshire Basin, France.
Diagnosis. A circumcavate species of Epelidinium with a smooth periphragm and discontinuous low-relief narrow folds, some of which appear to be sutural.
Description. A thin-walled mid-size circumcavate cyst with a rounded-pentagonal outline. The apical and lateral horns are indicated by slight bulges; the antapical horns are short. The periphragm is thin. Endocyst ovoidal; endophragm thin and smooth. The tabulation is partially indicated by the archaeopyle and a few low-relief, narrow parasutural folds. Archaeopyle equiepeliform; operculum free.
Dimensions. Holotype: pericyst length 77 µm; pericyst width 76 µm; endocyst length 61 µm; endocyst width 63 µm. Dimensions of measured specimens: pericyst length 77-82 µm (mean value 79 µm): pericyst width 76-82 µm (mean value 79 µm); endocyst length 61-71 µm (mean value 66 µm); endocyst width 63-69 µm (mean value 66 µm). Two specimens measured.
Comparison. Epelidinium normandiense differs from other Epelidinium species in its smaller size, significantly reduced apical and antapical horns and in the narrow, discontinuous, low-relief folds, only some of which appear to be sutural. Stratigraphical range. Earliest Eocene. Derivation of name. From Normandy, the French geographical region from which the holotype was recovered.