Back
Impagidinium pengchiahsum
Impagidinium pengchiahsum Shaw Chenglong, 1999b, p.173-174, figs.22-27.
Holotype: Shaw Chenglong, 1999b, figs.22-23.
Age: Eocene.
Original description (Shaw Chenglong, 1999b)
Description: Cyst intermediate size, subspherical; about 60 µm wide; autophragm thin, smooth, bearing membranuous parasutural septa. Pericingular archeopyle, distinct, Second and third apical paraplates large, and comprise significant area of upper dorsal epicyst; first and fourth apical paraplates relatively narrow and elongate. Paratabulation well defined.
Dimensions holotype: 60 µm long, 55 µm wide, height of septa 3-6 µm.
Dimensions overall: 60-65 µm long, 55-65 µm wide, height of septa 3-9 µm (n=4)
Stratigraphic occurence: Eocene (OK-1 well, 1788m)
Derivation of name: The specific epithet, pengchiahsum is derived from the name of the type locality.
Remarks: The species resembles I. crassimuratum Wilson from the Lower Eocene of Australia (Wilson, 1988) but differs from that species in having a membranous septa.
Holotype: Shaw Chenglong, 1999b, figs.22-23.
Age: Eocene.
Original description (Shaw Chenglong, 1999b)
Description: Cyst intermediate size, subspherical; about 60 µm wide; autophragm thin, smooth, bearing membranuous parasutural septa. Pericingular archeopyle, distinct, Second and third apical paraplates large, and comprise significant area of upper dorsal epicyst; first and fourth apical paraplates relatively narrow and elongate. Paratabulation well defined.
Dimensions holotype: 60 µm long, 55 µm wide, height of septa 3-6 µm.
Dimensions overall: 60-65 µm long, 55-65 µm wide, height of septa 3-9 µm (n=4)
Stratigraphic occurence: Eocene (OK-1 well, 1788m)
Derivation of name: The specific epithet, pengchiahsum is derived from the name of the type locality.
Remarks: The species resembles I. crassimuratum Wilson from the Lower Eocene of Australia (Wilson, 1988) but differs from that species in having a membranous septa.