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Heslertonia cylindrata
Heslertonia cylindrata Yun, 1981
Holotype: Yun, 1981, pl.8, figs.3a-b, text-figs.15a-b; Fensome et al., 1991, figs.1-4 - p.637
Paratype: Yun, 1981, pl.8, fig.11
Locus typicus: Timmermann brickyard near Esbeck, Germany
Stratum typicum: Early Santonian
Translation Yun, 1981: Fensome, 1991, p. 638
Original diagnosis: Yun, 1981, p. 72
The layers of the spherical to polygonal central body are not recognizable, the central body is divided into paraplates by delicate, smooth wing-like septa, which are 32 Ám high. The wing-like septa have convex edges and are lowest at their junctions. They increase in height posteriorly and are highest at the antapex. The paracingulum is slightly helicoid and has six compressed, cylindrical processes, which are interconnected by a single-layered membrane. This membrane is interrupted only at the parasulcus. The paratabulation is as follows: 3", 5", 6c, 5""", 1"""".
Holotype: Yun, 1981, pl.8, figs.3a-b, text-figs.15a-b; Fensome et al., 1991, figs.1-4 - p.637
Paratype: Yun, 1981, pl.8, fig.11
Locus typicus: Timmermann brickyard near Esbeck, Germany
Stratum typicum: Early Santonian
Translation Yun, 1981: Fensome, 1991, p. 638
Original diagnosis: Yun, 1981, p. 72
The layers of the spherical to polygonal central body are not recognizable, the central body is divided into paraplates by delicate, smooth wing-like septa, which are 32 Ám high. The wing-like septa have convex edges and are lowest at their junctions. They increase in height posteriorly and are highest at the antapex. The paracingulum is slightly helicoid and has six compressed, cylindrical processes, which are interconnected by a single-layered membrane. This membrane is interrupted only at the parasulcus. The paratabulation is as follows: 3", 5", 6c, 5""", 1"""".