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Trioperculodinium
From Fensome et al., 2019:
Trioperculodinium Drugg, 1970b, p.820.
Taxonomic senior synonym: Lingulodinium, according to Wall and Dale in Wall et al. (1973, p.24).
Type: Drugg, 1970b, text-figs.16F–G, as Trioperculodinium siculum.
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Original description: [Drugg, 1970]:
Description:
Chorate spherical tract possessing a dorsal precingular archaeopyle reflecting the loss of plates 2``, 3`` and 4``. The tract wall is two-layered. The ornamentation consists of intratabular processes which are closed both proximally and distally. There are several processes to each plate area.
Affinities:
This genus is similar to Operculodinium Wall, 1967. Trioperculodinium differs primarily in that the operculum consists of three plates (2``, 3``, and 4``) rather than one plate (3``).
Trioperculodinium Drugg, 1970b, p.820.
Taxonomic senior synonym: Lingulodinium, according to Wall and Dale in Wall et al. (1973, p.24).
Type: Drugg, 1970b, text-figs.16F–G, as Trioperculodinium siculum.
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Original description: [Drugg, 1970]:
Description:
Chorate spherical tract possessing a dorsal precingular archaeopyle reflecting the loss of plates 2``, 3`` and 4``. The tract wall is two-layered. The ornamentation consists of intratabular processes which are closed both proximally and distally. There are several processes to each plate area.
Affinities:
This genus is similar to Operculodinium Wall, 1967. Trioperculodinium differs primarily in that the operculum consists of three plates (2``, 3``, and 4``) rather than one plate (3``).