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Tubotuberella irregularis
Tubotuberella irregularis (Cookson and Eisenack, 1958) Davies, 1983
NOW Endoscrinium. Originally Wetzeliella, subsequently Wetzeliopsis (name not validly published), thirdly Scriniodinium?, fourthly Tubotuberella, fifthly (and now) Endoscrinium.
Taxonomic junior synonym: Wetzeliella meckelfeldensis, according to Costa and Downie (1979, p.43) — however, Lentin and Williams (1981, p.290) retained Wetzeliella meckelfeldensis.
Holotype: Cookson and Eisenack, 1958, pl.10, fig.1; Jan du Chêne et al., 1986, pl.109, figs.1-2
Locus typicus: Carnavon Basin, W Australia
Stratum typicum: Late Jurassic
Original description: Cookson and Eisenack, 1958, p. 28-29: Wetzeliella irregularis
Shell roughly four-sided with rather abbreviated apical and antapical horns and two more strongly defined lateral horns; the membrane is provided with somewhat distally placed bifurcate procceses. At the antapex in the type, the processes have fused more or less giving it a somewhat lobed outline. The capsule is nearly shpaerical and completely fills the shell, a large pylome is situated near the apex. in two of four specimens a "girdle" is faintly indicated.
Dimensions: Holotype - overall length 119 µm (apical horn is turned back), width 133 µm; capsule 85 x 81 µm. Paratype - overall length 107 µm, width 114 µm, capsule 76 x 76 µm.
NOW Endoscrinium. Originally Wetzeliella, subsequently Wetzeliopsis (name not validly published), thirdly Scriniodinium?, fourthly Tubotuberella, fifthly (and now) Endoscrinium.
Taxonomic junior synonym: Wetzeliella meckelfeldensis, according to Costa and Downie (1979, p.43) — however, Lentin and Williams (1981, p.290) retained Wetzeliella meckelfeldensis.
Holotype: Cookson and Eisenack, 1958, pl.10, fig.1; Jan du Chêne et al., 1986, pl.109, figs.1-2
Locus typicus: Carnavon Basin, W Australia
Stratum typicum: Late Jurassic
Original description: Cookson and Eisenack, 1958, p. 28-29: Wetzeliella irregularis
Shell roughly four-sided with rather abbreviated apical and antapical horns and two more strongly defined lateral horns; the membrane is provided with somewhat distally placed bifurcate procceses. At the antapex in the type, the processes have fused more or less giving it a somewhat lobed outline. The capsule is nearly shpaerical and completely fills the shell, a large pylome is situated near the apex. in two of four specimens a "girdle" is faintly indicated.
Dimensions: Holotype - overall length 119 µm (apical horn is turned back), width 133 µm; capsule 85 x 81 µm. Paratype - overall length 107 µm, width 114 µm, capsule 76 x 76 µm.