Back
Cribroperidinium xinjiangense
Cribroperidinium xinjiangense (He Chengquan, 1991) Lentin and Williams, 1993
Originally Millioudodinium, subsequently (and now) Cribroperidinium.
Holotype: He Chengquan, 1991, pl4, fig.21
Age: Paleocene-Late Eocene
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description Oval cyst, grows wider than the width of the groove is divided into nearly equal to the two semi-circular parts. The upper cyst has a cylindrical vertex angle of about 5μ.m, the lower cyst lack of tail horn. Equatorial groove equatorial position, shallow concave, narrow, spiral, wide 4-5μ .. m, at both ends of the ventral deviation about 1 report width of the cingulum. The longitudinal groove extends from the lower cyst below the first top reflection plate (1 ') of the upper cyst. Longitudinal, chess ditch and reflect the edge of the plate are smooth ridge as the boundary ridge of the ridge of the upper edge of the cingulum was short stab-shaped extension i out of the side. See several short-cone punctures at the edge of the cyst, especially one larger at the caudal margin (ca. μ..m), which may be located at the corners of adjacent reflectors. Reflect the plate more obvious, but vertical and horizontal grooves in the reflection sheet is not clear z reflect the plate is roughly 4 ', la, 6 ",? C, 5-6' ', lp, 1". The first smaller reflecting plate (1 '), long and narrow, and the smaller reflecting plate with it (1'), may be equivalent to the anterior reflecting plate (la); the tail reflecting plate is smaller , Its edge serrated. The cyst wall is unclear, reflecting an incompletely fine network of short wrinkles on the surface of the slab. The contour is slightly dentate. Archeopyle before the waist, P-type, from the first three pieces of the front waist to reflect the plate moves. Cover preserved in situ. Cyst length 65μ .. m, width 5 1μ .. m. Comparison of this species to the top to reflect the plate is slender and tail to reflect the edge of the plate is clearly serrated and Western Europe, the early Tertiary Millioudodinium giuseppei (Morgenroth) and M.tenuitabulatum (Gerlach) are not the same.
Location and stratigraphy: Wuchaxian County Basebulak E Basebulak group two and three.
Originally Millioudodinium, subsequently (and now) Cribroperidinium.
Holotype: He Chengquan, 1991, pl4, fig.21
Age: Paleocene-Late Eocene
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description Oval cyst, grows wider than the width of the groove is divided into nearly equal to the two semi-circular parts. The upper cyst has a cylindrical vertex angle of about 5μ.m, the lower cyst lack of tail horn. Equatorial groove equatorial position, shallow concave, narrow, spiral, wide 4-5μ .. m, at both ends of the ventral deviation about 1 report width of the cingulum. The longitudinal groove extends from the lower cyst below the first top reflection plate (1 ') of the upper cyst. Longitudinal, chess ditch and reflect the edge of the plate are smooth ridge as the boundary ridge of the ridge of the upper edge of the cingulum was short stab-shaped extension i out of the side. See several short-cone punctures at the edge of the cyst, especially one larger at the caudal margin (ca. μ..m), which may be located at the corners of adjacent reflectors. Reflect the plate more obvious, but vertical and horizontal grooves in the reflection sheet is not clear z reflect the plate is roughly 4 ', la, 6 ",? C, 5-6' ', lp, 1". The first smaller reflecting plate (1 '), long and narrow, and the smaller reflecting plate with it (1'), may be equivalent to the anterior reflecting plate (la); the tail reflecting plate is smaller , Its edge serrated. The cyst wall is unclear, reflecting an incompletely fine network of short wrinkles on the surface of the slab. The contour is slightly dentate. Archeopyle before the waist, P-type, from the first three pieces of the front waist to reflect the plate moves. Cover preserved in situ. Cyst length 65μ .. m, width 5 1μ .. m. Comparison of this species to the top to reflect the plate is slender and tail to reflect the edge of the plate is clearly serrated and Western Europe, the early Tertiary Millioudodinium giuseppei (Morgenroth) and M.tenuitabulatum (Gerlach) are not the same.
Location and stratigraphy: Wuchaxian County Basebulak E Basebulak group two and three.