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Trichodinium granulatum
From Fensome et al., 2019:
Trichodinium? granulatum (Horowitz, 1975, p.25, pl.1, fig.4) Fensome et al., 2019a, p.56.
Holotype: Horowitz, 1975, pl.1, fig.4; Fensome et al., 2019a, fig.20G.
Originally Doidyx, subsequently Cyclonephelium?, thirdly (and now) Trichodinium?. Questionable assignment: Fensome et al. (2019a. p.56). Conway and Cousminer (1983, p.35) questioned the age assigned to this species.
Age: Late Triassic (probably not in place).
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Original description (Horowitz, 1975): translation PKB 2024
Holotype: slide P 431, Zohar 9 survey, depth 2014 m, Upper Triassic, South of Israel.
Description: Proximal Dinoflagellate cyst. Biconical cyst, asymmetrical, apical cone a little wider, apex sometimes open. Equatorial cingulum clear, tabulation barely visible. Delicate membrane, approximately 112 IL thick, slightly granular. Very small spines, l-2 IL long, covering the cyst in a few places, irregularly distributed.
Average dimensions: 15 X 67 ll, 20 specimens.
Discussion: This species differs from other species of the Doidyx genus by the small size of its spines, which give a grainy appearance.
Origin of the name: after the granular appearance of the cyst.
Trichodinium? granulatum (Horowitz, 1975, p.25, pl.1, fig.4) Fensome et al., 2019a, p.56.
Holotype: Horowitz, 1975, pl.1, fig.4; Fensome et al., 2019a, fig.20G.
Originally Doidyx, subsequently Cyclonephelium?, thirdly (and now) Trichodinium?. Questionable assignment: Fensome et al. (2019a. p.56). Conway and Cousminer (1983, p.35) questioned the age assigned to this species.
Age: Late Triassic (probably not in place).
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Original description (Horowitz, 1975): translation PKB 2024
Holotype: slide P 431, Zohar 9 survey, depth 2014 m, Upper Triassic, South of Israel.
Description: Proximal Dinoflagellate cyst. Biconical cyst, asymmetrical, apical cone a little wider, apex sometimes open. Equatorial cingulum clear, tabulation barely visible. Delicate membrane, approximately 112 IL thick, slightly granular. Very small spines, l-2 IL long, covering the cyst in a few places, irregularly distributed.
Average dimensions: 15 X 67 ll, 20 specimens.
Discussion: This species differs from other species of the Doidyx genus by the small size of its spines, which give a grainy appearance.
Origin of the name: after the granular appearance of the cyst.