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Cerodinium depressum
From Fensome et al., 2019:
Cerodinium depressum (Morgenroth, 1966a, p.8, pl.1, fig.2) Lentin and Williams, 1987, p.114. Holotype: Morgenroth, 1966a, pl.1, fig.2. Originally Deflandrea, subsequently Ceratiopsis (combination illegitimate), thirdly (and now) Cerodinium. Age: Early Eocene.
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Original description as Deflandrea depressa: [Morgenroth 1966a, p. 8]: (Translation: GSC):
Diagnosis:
A species of the genus Deflandrea with a long pointed apical horn and two pronounced antapical horns. The inner capsule is strongly flattened in a longitudinal direction.
Description:
The theca has an elongate, pentagonal outline. The epitheca is drawn out into a long conical pointed apical horn. The outer wall possesses a faint longitudinal furrow. The inner capsule is always flattened in a sagittal direction and touches the outer wall only in the lateral position. The distinct circular equatorial furrow is spiny on the two margins. On the hypotheca is a wide longitudinal furrow. Many specimens possess a rounded trapezoidal archeopyle which lies under the apical pole. At the present time, no species of the genus Deflandrea Eisenack with a similar morphology is known.
Dimensions:
Capsule length: 26 microns (20/28 microns), capsule breadth: 38 microns (31/50 microns), specimen length: 80 microns (70/140 microns), specimen breadth: 38 microns (31/50 microns) (ldentical with capsule breadth) (30 measurements). Number of specimens examined: 45.
Cerodinium depressum (Morgenroth, 1966a, p.8, pl.1, fig.2) Lentin and Williams, 1987, p.114. Holotype: Morgenroth, 1966a, pl.1, fig.2. Originally Deflandrea, subsequently Ceratiopsis (combination illegitimate), thirdly (and now) Cerodinium. Age: Early Eocene.
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Original description as Deflandrea depressa: [Morgenroth 1966a, p. 8]: (Translation: GSC):
Diagnosis:
A species of the genus Deflandrea with a long pointed apical horn and two pronounced antapical horns. The inner capsule is strongly flattened in a longitudinal direction.
Description:
The theca has an elongate, pentagonal outline. The epitheca is drawn out into a long conical pointed apical horn. The outer wall possesses a faint longitudinal furrow. The inner capsule is always flattened in a sagittal direction and touches the outer wall only in the lateral position. The distinct circular equatorial furrow is spiny on the two margins. On the hypotheca is a wide longitudinal furrow. Many specimens possess a rounded trapezoidal archeopyle which lies under the apical pole. At the present time, no species of the genus Deflandrea Eisenack with a similar morphology is known.
Dimensions:
Capsule length: 26 microns (20/28 microns), capsule breadth: 38 microns (31/50 microns), specimen length: 80 microns (70/140 microns), specimen breadth: 38 microns (31/50 microns) (ldentical with capsule breadth) (30 measurements). Number of specimens examined: 45.