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Diconodinium caulleryi
From Fensome et al., 2019:
Diconodinium? caulleryi Deflandre, 1935, p.229, pl.6, fig.4 ex Lentin and Williams, 1973, 46. Holotype: Deflandre, 1934, fig.7;
Deflandre, 1935, pl.6, fig.4; Deflandre, 1936b, pl.5, figs.5,7. Originally Palaeoperidinium (name not validly published), subsequently Diconodinium, thirdly (and now) Diconodinium?. Questionable assignment: Morgan (1977, p.129). The name Palaeoperidinium caulleryi was not validly published in Deflandre (1935) since the generic name Palaeoperidinium was not validly published until 1967. The name Diconodinium caulleryi was not validly published in Deflandre (1966, p.4) since no holotype was indicated. A full description of this species was given in Deflandre (1936b, p.177). Age: Senonian.
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Original description: [Deflandre, 1935] (translated from French):
Palaeoperidinium caulleryi Defl. 1934 (fig. 4, PI. VI) and Palaeoperidinium cayeuxi Defl. 1934 (fig. 2, 3, PI. VI). The first has a fairly developed apical horn and a very distinct antapical spine; the membrane is bristling with spines, as is the transverse groove, which gives it a very particular appearance. These latter spines could also have supported two aliform blades framing the groove. Palaeoperidinium cayeuxi is a small species very easy to recognize, of which I hope to be able to establish the tabulation, although the fairly numerous specimens that I have so far are incomplete.
Diconodinium? caulleryi Deflandre, 1935, p.229, pl.6, fig.4 ex Lentin and Williams, 1973, 46. Holotype: Deflandre, 1934, fig.7;
Deflandre, 1935, pl.6, fig.4; Deflandre, 1936b, pl.5, figs.5,7. Originally Palaeoperidinium (name not validly published), subsequently Diconodinium, thirdly (and now) Diconodinium?. Questionable assignment: Morgan (1977, p.129). The name Palaeoperidinium caulleryi was not validly published in Deflandre (1935) since the generic name Palaeoperidinium was not validly published until 1967. The name Diconodinium caulleryi was not validly published in Deflandre (1966, p.4) since no holotype was indicated. A full description of this species was given in Deflandre (1936b, p.177). Age: Senonian.
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Original description: [Deflandre, 1935] (translated from French):
Palaeoperidinium caulleryi Defl. 1934 (fig. 4, PI. VI) and Palaeoperidinium cayeuxi Defl. 1934 (fig. 2, 3, PI. VI). The first has a fairly developed apical horn and a very distinct antapical spine; the membrane is bristling with spines, as is the transverse groove, which gives it a very particular appearance. These latter spines could also have supported two aliform blades framing the groove. Palaeoperidinium cayeuxi is a small species very easy to recognize, of which I hope to be able to establish the tabulation, although the fairly numerous specimens that I have so far are incomplete.