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Apteodinium microceratum
From Fensome et al., 2019:
Apteodinium microceratum Cookson and Eisenack, 1982, p.26, pl.1, fig.2. Holotype: Cookson and Eisenack, 1982, pl.1, fig.2. Age: latest Turonian–Coniacian.
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Original description: [Cookson and Eisenack, 1982] (translated from German):
Apteodinium microceratum n. sp.
Plate 1, Fig. 2
Type: The specimen shown on Plate 1, Fig. 2 and preserved in the Gingin Brook II specimen.
Diagnosis: Shape almost spherical, epitract slightly conical, hypotract flatly spherical. Epitract far exceeds the hypotract, with a tiny apical horn. Girdle only indicated by a fold. Wall thin and smooth.
Dimensions: 57 x 57 μ.
Note: A. microceratum is characterized by its spherical shape and tiny apical horn.
Occurrence: In the Gingin Brook Bore at 404-414 ft. A second specimen measuring 73 x 66 μ is preserved in the Pebble Point Form. No. 3.
Apteodinium microceratum Cookson and Eisenack, 1982, p.26, pl.1, fig.2. Holotype: Cookson and Eisenack, 1982, pl.1, fig.2. Age: latest Turonian–Coniacian.
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Original description: [Cookson and Eisenack, 1982] (translated from German):
Apteodinium microceratum n. sp.
Plate 1, Fig. 2
Type: The specimen shown on Plate 1, Fig. 2 and preserved in the Gingin Brook II specimen.
Diagnosis: Shape almost spherical, epitract slightly conical, hypotract flatly spherical. Epitract far exceeds the hypotract, with a tiny apical horn. Girdle only indicated by a fold. Wall thin and smooth.
Dimensions: 57 x 57 μ.
Note: A. microceratum is characterized by its spherical shape and tiny apical horn.
Occurrence: In the Gingin Brook Bore at 404-414 ft. A second specimen measuring 73 x 66 μ is preserved in the Pebble Point Form. No. 3.