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Homotryblium oceanicum
From Fensome et al., 2019:
Homotryblium oceanicum Eaton, 1976, p.268, pl.10, figs.5–8. Holotype: Eaton, 1976, pl.10, fig.5; Bujak et al., 1980, pl.1, figs.10–12. Age: Middle Eocene (see Aubry, 1986).
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Locus typicus: Bracklesham Beds, Alum Bay, Isle of Wight, England.
Original diagnosis: Eaton, 1976, p. 268
Cyst body subspherical or spherical with a granular surface. Processes long, broad and cylindrical, and individually relatively constant in breadth, showing little distal expansion. Distal margin denticulate, secate or aculeate. Processes intratabular, one per reflected plate area. Reflected tabulation of the form 31, 6'', 6c, 5''', 1''''; archaeopyle epitractal.
Dimensions: Holotype: diameter of cyst body 49 µm; processes, length up to 28 µm, breadth up to 10 µm. Observed range: diameter of cyst body 36-50 µm; processes, length up to 30 µm, breadth up to 16 µm. (n = I2).
Affinities:
Eaton, 1976, p. 268: The majority of the studied specimens are incomplete; no sulcal processes have been observed. In some specimens there is a proximal circle where the processes diverge from the cyst body. The distinctive long broad cylindrical processes, individually relatively constant in breadth, distinguish H. oceanicum from all described species of Homotryblium.
Homotryblium oceanicum Eaton, 1976, p.268, pl.10, figs.5–8. Holotype: Eaton, 1976, pl.10, fig.5; Bujak et al., 1980, pl.1, figs.10–12. Age: Middle Eocene (see Aubry, 1986).
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Locus typicus: Bracklesham Beds, Alum Bay, Isle of Wight, England.
Original diagnosis: Eaton, 1976, p. 268
Cyst body subspherical or spherical with a granular surface. Processes long, broad and cylindrical, and individually relatively constant in breadth, showing little distal expansion. Distal margin denticulate, secate or aculeate. Processes intratabular, one per reflected plate area. Reflected tabulation of the form 31, 6'', 6c, 5''', 1''''; archaeopyle epitractal.
Dimensions: Holotype: diameter of cyst body 49 µm; processes, length up to 28 µm, breadth up to 10 µm. Observed range: diameter of cyst body 36-50 µm; processes, length up to 30 µm, breadth up to 16 µm. (n = I2).
Affinities:
Eaton, 1976, p. 268: The majority of the studied specimens are incomplete; no sulcal processes have been observed. In some specimens there is a proximal circle where the processes diverge from the cyst body. The distinctive long broad cylindrical processes, individually relatively constant in breadth, distinguish H. oceanicum from all described species of Homotryblium.