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Phanerodinium cayeuxii
From Fensome et al., 2019:
Phanerodinium cayeuxii Deflandre, 1936b, p.178–179, pl.6, figs.8–15; pl.7, fig.8 ex Deflandre, 1937a, p.110–112. Emendation: Slimani, 1994, p.44, as Phanerodinium cayeuxii. Holotype: Deflandre, 1934, fig.5; Deflandre, 1935, pl.6, fig.3; Deflandre, 1936b, pl.6, figs.8–10. Originally Palaeoperidinium (name not validly published), subsequently (and now) Phanerodinium. The name Palaeoperidinium cayeuxii was not validly published in Deflandre (1936b) since the generic name Palaeoperidinium was not validly published until 1967. Age: Senonian.
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Original description Deflandre, 1936b:
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Emended diagnosis (Slimani, 1994) Translation PKB 2025:
Small, proximal to proximal chorate, acavate cyst, spheroidal, ovoid, or polyhedral in shape, with an epicyst much smaller than the hypocyst. Only the dorsal surface is provided with parasutural ridges, which are low or relatively high, smooth, perforated, or denticulate to crenulate, and possibly with gonal processes at their junctions. Paralabulation: ? ', 3 - ?6", 2 - ?6c, 3 - ?6''', 0 -1 p, 1''''. There are often 3 precingulate paraplates, 2 to 3 paracingulates, 3 to 4 postcingulates. The segmented or unsegmented paracingulum is indicated by parallel parasutural ridges. The archaeopyle is precingulate of type P (only 1 paraplate ?3") with a free operculum, it corresponds to the median precingulate plate which is often located to the right of a median longitudinal line.
Phanerodinium cayeuxii Deflandre, 1936b, p.178–179, pl.6, figs.8–15; pl.7, fig.8 ex Deflandre, 1937a, p.110–112. Emendation: Slimani, 1994, p.44, as Phanerodinium cayeuxii. Holotype: Deflandre, 1934, fig.5; Deflandre, 1935, pl.6, fig.3; Deflandre, 1936b, pl.6, figs.8–10. Originally Palaeoperidinium (name not validly published), subsequently (and now) Phanerodinium. The name Palaeoperidinium cayeuxii was not validly published in Deflandre (1936b) since the generic name Palaeoperidinium was not validly published until 1967. Age: Senonian.
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Original description Deflandre, 1936b:
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Emended diagnosis (Slimani, 1994) Translation PKB 2025:
Small, proximal to proximal chorate, acavate cyst, spheroidal, ovoid, or polyhedral in shape, with an epicyst much smaller than the hypocyst. Only the dorsal surface is provided with parasutural ridges, which are low or relatively high, smooth, perforated, or denticulate to crenulate, and possibly with gonal processes at their junctions. Paralabulation: ? ', 3 - ?6", 2 - ?6c, 3 - ?6''', 0 -1 p, 1''''. There are often 3 precingulate paraplates, 2 to 3 paracingulates, 3 to 4 postcingulates. The segmented or unsegmented paracingulum is indicated by parallel parasutural ridges. The archaeopyle is precingulate of type P (only 1 paraplate ?3") with a free operculum, it corresponds to the median precingulate plate which is often located to the right of a median longitudinal line.