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Thalassiphora spinifera
From Fensome et al., 2019:
Thalassiphora? spinifera (Cookson and Eisenack, 1965a, p.124–125, pl.14, fig.10) Stover and Evitt, 1978, p.195.
Holotype: Cookson and Eisenack, 1965a, pl.14, fig.10.
Originally Stephodinium, subsequently (and now) Thalassiphora?.
Questionable assignment: Stover and Evitt (1978, p.195).
Age: Late Eocene.
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Original description (Cookson & Eisenack, 1965)
Description: Shell with the two prominent equatorial wing-like flanges characteristic of the genus. The flanges are crossed by fine ledges which radiate from the shell. The margins of the flanges are undulant and their convexities ornamented with spinous outgrowths. A ventral opening is present, in the vicinity of which are a few larger spines.
Dimensions: Holotype-c. 64 μ.across the wing. Range-c. 56-64 p. Comment: Six specimens have been recovered, all of which are considerably flattened, making details regarding the shell and measurements difficult to obtain. However, all are considerably smaller than Stephodinium australicum Cookson & Eisenack 1962 from mid-Cretaceous deposits in Western Australia. S. spiniferum differs from this species, as well as from the two European Cretaceous species S. coronatum Defl.andre and s. europaecum Cookson & Hughes 1964, in the presence of the spine-like outgrowths.
Thalassiphora? spinifera (Cookson and Eisenack, 1965a, p.124–125, pl.14, fig.10) Stover and Evitt, 1978, p.195.
Holotype: Cookson and Eisenack, 1965a, pl.14, fig.10.
Originally Stephodinium, subsequently (and now) Thalassiphora?.
Questionable assignment: Stover and Evitt (1978, p.195).
Age: Late Eocene.
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Original description (Cookson & Eisenack, 1965)
Description: Shell with the two prominent equatorial wing-like flanges characteristic of the genus. The flanges are crossed by fine ledges which radiate from the shell. The margins of the flanges are undulant and their convexities ornamented with spinous outgrowths. A ventral opening is present, in the vicinity of which are a few larger spines.
Dimensions: Holotype-c. 64 μ.across the wing. Range-c. 56-64 p. Comment: Six specimens have been recovered, all of which are considerably flattened, making details regarding the shell and measurements difficult to obtain. However, all are considerably smaller than Stephodinium australicum Cookson & Eisenack 1962 from mid-Cretaceous deposits in Western Australia. S. spiniferum differs from this species, as well as from the two European Cretaceous species S. coronatum Defl.andre and s. europaecum Cookson & Hughes 1964, in the presence of the spine-like outgrowths.