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Uvatodinium marginatum
From Fensome et al., 2019:
Uvatodinium marginatum Vozzhennikova, 1967, p.51–52, pl.8, figs.1–2.
Holotype: Vozzhennikova, 1967, pl.8, fig.1, lost according to Lentin and Vozzhennikova (1990, p.71).
Taxonomic senior synonym: Uvatodinium nasutum, according to Lentin and Vozzhennikova (1990, p.71).
Age: Paleocene.
Locus typicus: W Siberia (Uvat), Russia
Translation Vozzhennikova, 1967: Lentin and Vozzhennikova, 1990
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Original description: Vozzhennikova, 1967, p.51-52
Theca ovoid or pyriform. Epitheca hemispherical, somewhat larger than hypotheca, with a blunt ended apical horn. Hypotheca broadly rounded at the antapex and furnished with a broad "cellular" border. Transverse furrow annulate, rather deep, with a narrow lamella. Longitutinal furrow indistinct. Surface of theca coarsely reticulate.
Uvatodinium marginatum Vozzhennikova, 1967, p.51–52, pl.8, figs.1–2.
Holotype: Vozzhennikova, 1967, pl.8, fig.1, lost according to Lentin and Vozzhennikova (1990, p.71).
Taxonomic senior synonym: Uvatodinium nasutum, according to Lentin and Vozzhennikova (1990, p.71).
Age: Paleocene.
Locus typicus: W Siberia (Uvat), Russia
Translation Vozzhennikova, 1967: Lentin and Vozzhennikova, 1990
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Original description: Vozzhennikova, 1967, p.51-52
Theca ovoid or pyriform. Epitheca hemispherical, somewhat larger than hypotheca, with a blunt ended apical horn. Hypotheca broadly rounded at the antapex and furnished with a broad "cellular" border. Transverse furrow annulate, rather deep, with a narrow lamella. Longitutinal furrow indistinct. Surface of theca coarsely reticulate.