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Blysmatodinium
From Williams et al., 2017:
[Blysmatodinium, McMinn, 1992, p. 434
Type species: Blysmatodinium argoi, McMinn, 1992 (pl.3, figs.1–3)]
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Original description: [McMinn, 1992]:
Diagnosis:
Cyst composed of an endophragm and periphragm. Periphragm is characterised by numerous nontabular blisters. Archaeopyle is apical; operculum is detached.
Remarks:
The pattern of blisters on Blysmatodinium does not reflect a typical gonyaulacean paratabulation pattern. However, the blisters do show evidence of alignment parallel to a paracingulum and thus could reflect a nongonyaulacean paratabulation. Blysmatodinium is differentiated from Ataxodinium by having an apical archaeopyle and having distinct blisters in the periphragm, rather than "funnel-shaped depressions" (Reid, 1974). It is differentiated from Polykrikos Butschli, 1873, a nongonyaulacean genus by lacking both, reticulum and fibrous periphragm.
[Blysmatodinium, McMinn, 1992, p. 434
Type species: Blysmatodinium argoi, McMinn, 1992 (pl.3, figs.1–3)]
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Original description: [McMinn, 1992]:
Diagnosis:
Cyst composed of an endophragm and periphragm. Periphragm is characterised by numerous nontabular blisters. Archaeopyle is apical; operculum is detached.
Remarks:
The pattern of blisters on Blysmatodinium does not reflect a typical gonyaulacean paratabulation pattern. However, the blisters do show evidence of alignment parallel to a paracingulum and thus could reflect a nongonyaulacean paratabulation. Blysmatodinium is differentiated from Ataxodinium by having an apical archaeopyle and having distinct blisters in the periphragm, rather than "funnel-shaped depressions" (Reid, 1974). It is differentiated from Polykrikos Butschli, 1873, a nongonyaulacean genus by lacking both, reticulum and fibrous periphragm.