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Homotryblium caliculum
From Fensome et al., 2019:
Homotryblium caliculum Bujak in Bujak et al., 1980, p.62,64, pl.16, fig.1. Holotype: Bujak et al., 1980, pl.16, fig.1. Age: Middle Eocene (see Aubry, 1986).
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Locus typicus: Whitecliff Bay, Isle of Whight, S England
Original diagnosis: Bujak in Bujak et al., 1980, p. 62-63
Chorate cyst with subsphaerical to ovoidal central body. Periphragm smooth to chagrinate, forming intratabular processes, one per paraplate. Processes caliculate and open distally with entire or serrate margins. Pratabulation 4', 6'', xc, 6''', 1p, 1'''', p.s. Processes sometimes absent from the cingular paraplates. Slender adventitious processes are occasionally present. Archaeopyle epicystal; archaeopyle margin characterized by anterior sulcal projection. All opercular paraplates are detached.
Homotryblium caliculum Bujak in Bujak et al., 1980, p.62,64, pl.16, fig.1. Holotype: Bujak et al., 1980, pl.16, fig.1. Age: Middle Eocene (see Aubry, 1986).
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Locus typicus: Whitecliff Bay, Isle of Whight, S England
Original diagnosis: Bujak in Bujak et al., 1980, p. 62-63
Chorate cyst with subsphaerical to ovoidal central body. Periphragm smooth to chagrinate, forming intratabular processes, one per paraplate. Processes caliculate and open distally with entire or serrate margins. Pratabulation 4', 6'', xc, 6''', 1p, 1'''', p.s. Processes sometimes absent from the cingular paraplates. Slender adventitious processes are occasionally present. Archaeopyle epicystal; archaeopyle margin characterized by anterior sulcal projection. All opercular paraplates are detached.