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Shublikodinium granulatum
Shublikodinium granulatum Wiggins, 1973
Tax. jr. synonym of Rhaetogonyaulax dilatata (Wiggins, 1973) Stover and Evitt, 1978, according to Stover and Evitt, 1978.
Holotype: Wiggins, 1973, pl. 5, fig.2
Locus typicus: Darra Formation, Queensland, Alaska
Stratum typicum: Late Triassic
Original diagnosis: Wiggins, 1973, p.6
A Saeptodinium of ovoid or peridinioid form. Endocorpus ovoidal, enclosed by the pericorpus which has a bulge on the epitract and two slight subequal bulges at the antapex. Periphragm smooth as is the endophragm. The helicoid laevorotatory girdle is relatively wide.
Original description: Wiggins, 1973, p.6
Both the periphragm and endophragm are smooth to scabrate and do not show any features of tabulation or any indication of archeopyle formation. The apices of many specimens bear a thickened plug, the function of which is not known. The degree of bulge, and the accompanying indentation in the antapical region is variable from almost no bulge to forms where the indentation is 2-5 µm deep. The epitract is subrounded but does not show some development of an apical horn. The epitract and hypotract are of approximately equal sizes. The pericoel is 3-5 µm wide and the sulcal groove 5 - 8 µm wide. The periphragm and endophragm are of approximately equal thickness, 0.5 µm. Dimensions: Pericorpus length 50-62 µm, breadth 45-60 µm. Endocorpus: length 49-55 µm, breadth 37-50 µm.
Tax. jr. synonym of Rhaetogonyaulax dilatata (Wiggins, 1973) Stover and Evitt, 1978, according to Stover and Evitt, 1978.
Holotype: Wiggins, 1973, pl. 5, fig.2
Locus typicus: Darra Formation, Queensland, Alaska
Stratum typicum: Late Triassic
Original diagnosis: Wiggins, 1973, p.6
A Saeptodinium of ovoid or peridinioid form. Endocorpus ovoidal, enclosed by the pericorpus which has a bulge on the epitract and two slight subequal bulges at the antapex. Periphragm smooth as is the endophragm. The helicoid laevorotatory girdle is relatively wide.
Original description: Wiggins, 1973, p.6
Both the periphragm and endophragm are smooth to scabrate and do not show any features of tabulation or any indication of archeopyle formation. The apices of many specimens bear a thickened plug, the function of which is not known. The degree of bulge, and the accompanying indentation in the antapical region is variable from almost no bulge to forms where the indentation is 2-5 µm deep. The epitract is subrounded but does not show some development of an apical horn. The epitract and hypotract are of approximately equal sizes. The pericoel is 3-5 µm wide and the sulcal groove 5 - 8 µm wide. The periphragm and endophragm are of approximately equal thickness, 0.5 µm. Dimensions: Pericorpus length 50-62 µm, breadth 45-60 µm. Endocorpus: length 49-55 µm, breadth 37-50 µm.