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Ceratiopsis depressa
Ceratiopsis depressa, (Morgenroth, 1966), Lentin and Williams, 1977
Combination illegitimate since the generic name Ceratiopsis is illegitimate.
Now Cerodinium. Originally Deflandrea, subsequently Ceratiopsis (combination illegitimate), thirdly (and now) Cerodinium.
Stover and Evitt, 1978, retained this species in Deflandrea Eisenack, 1938. Lentin and Williams, 1981, retained it in Ceratiopsis.
Holotype: Morgenroth, 1966, pl.1, fig.2
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.
Combination illegitimate since the generic name Ceratiopsis is illegitimate.
Now Cerodinium. Originally Deflandrea, subsequently Ceratiopsis (combination illegitimate), thirdly (and now) Cerodinium.
Stover and Evitt, 1978, retained this species in Deflandrea Eisenack, 1938. Lentin and Williams, 1981, retained it in Ceratiopsis.
Holotype: Morgenroth, 1966, pl.1, fig.2
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.