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Lejeunecysta pentagona
Lejeunecysta pentagona He Chengquan, 1991
Holotype: He Chengquan, 1991, pl.1, fig.13
Age: Middle Eocene
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description: Cyst dorsal ventral flatened, contour pentagonal, the waist is a little lateral elongated, length and width nearly equal. Large upper cyst, conical, edges slightly concave-convex, apical horn micro-display, top blunt; Lower cyst inverted trapezoid, antapical edge nearly straight or truncated, antapical horns missing. Cingulum inclines to the lower cyst, annular, width 5-7μm, decorated with fine ridges on the edge. Sulcus may exist. Thin cyst wall, the surface is slightly wrinkled or nearly smooth, with wrinkles or locally with longitudinal streaks. No paratabulation or inner body. The archeopyle intercalary. Cover completely separated, fall off or in situ preservation.
Cyst length 52.5-53μm, width 50-55μm (measured 3); Holotype length 53μm, width 55μm.
Location and stratigraphy: Ulugquat County Basebulak; Wulagen fm.
Holotype: He Chengquan, 1991, pl.1, fig.13
Age: Middle Eocene
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description: Cyst dorsal ventral flatened, contour pentagonal, the waist is a little lateral elongated, length and width nearly equal. Large upper cyst, conical, edges slightly concave-convex, apical horn micro-display, top blunt; Lower cyst inverted trapezoid, antapical edge nearly straight or truncated, antapical horns missing. Cingulum inclines to the lower cyst, annular, width 5-7μm, decorated with fine ridges on the edge. Sulcus may exist. Thin cyst wall, the surface is slightly wrinkled or nearly smooth, with wrinkles or locally with longitudinal streaks. No paratabulation or inner body. The archeopyle intercalary. Cover completely separated, fall off or in situ preservation.
Cyst length 52.5-53μm, width 50-55μm (measured 3); Holotype length 53μm, width 55μm.
Location and stratigraphy: Ulugquat County Basebulak; Wulagen fm.