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Thalassiphora angusta
Thalassiphora angusta He Chengquan, 1991
Holotype: He Chengquan, 1991, pl.10, fig.6
Age: Middle Eocene
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description: Cyst consists of the film (the outer wall) and the central body (inner wall), no apical antapical horn. The central body contour nearly circular, solid wall, the surface rough; There is always a clear horseshoe archeopyle in the back, , P-type, formed by the movement of the third precingular plate; Operculum preserved in situ. There is a transverse wrinkle close to the archeopyle, maybe the reflection of the cingulum.Film fragile, narrow, 5-7.5 μm wide, surface fine granular or short wrinkled, the membrane of the majority of specimens is not preserved completely, usually some residues around the central body or almost completely lost, on a relatively completely preserved specimen there are regions formed by the membrane wrinkles, maybe the symbols of plates; The membrane is separated from the central body except at the back side. Total diameter 92.5-100μm, the central body diameter 85-97.5 μm (Measured 3), the total diameter of holotype 100 μm, central body diameter 87.5 μm, film width 7.5 μm.
Location and stratigraphy: Wuqia County Basebulak, Wulagen fm.
Holotype: He Chengquan, 1991, pl.10, fig.6
Age: Middle Eocene
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description: Cyst consists of the film (the outer wall) and the central body (inner wall), no apical antapical horn. The central body contour nearly circular, solid wall, the surface rough; There is always a clear horseshoe archeopyle in the back, , P-type, formed by the movement of the third precingular plate; Operculum preserved in situ. There is a transverse wrinkle close to the archeopyle, maybe the reflection of the cingulum.Film fragile, narrow, 5-7.5 μm wide, surface fine granular or short wrinkled, the membrane of the majority of specimens is not preserved completely, usually some residues around the central body or almost completely lost, on a relatively completely preserved specimen there are regions formed by the membrane wrinkles, maybe the symbols of plates; The membrane is separated from the central body except at the back side. Total diameter 92.5-100μm, the central body diameter 85-97.5 μm (Measured 3), the total diameter of holotype 100 μm, central body diameter 87.5 μm, film width 7.5 μm.
Location and stratigraphy: Wuqia County Basebulak, Wulagen fm.