Back
Hystrichosphaeridium minus
Hystrichosphaeridium minus He Chengquan, 1991, p.131-132, pl.15, fig.10; text-fig.22.
Holotype: He Chengquan, 1991, pl.15, fig.10; text-fig.22.
Age: Late Turonian-early Senonian.
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description The body is round. Wall thin, two layers, the inner and outer walls close to or only in the base of the separation of the separation, open z outer wall surface smooth - granular, with more plate protrusions around the circumference of about 13, the protrusions formed by the outer wall, short and hollow Slightly thinner distal, truncate-dorsal at the ends, more consistent in length but different in width and smooth in surface. In addition there are 1-2 rod-shaped protrusions. Whether the archeopyle exists is still not sure.
The body diameter of about 33μm, 8-10μ long protrusions, m, most of the protrusions wide 3-6μm.
This new species is similar in morphology to Hystrichosphaeridium raritanianum in the Late Jersey, New Jersey, USA, but the former is smaller in body, with more protuberances and slightly more distal Thin and not expanded, the end of a micro-concave cut and so on.
Location and stratigraphy: Wucha County Bashibulaxi z Wuyi Tucker group bottom.
Litosphaeridium Davey et Williams, 1966
Pattern species Litosphaeridium siphoniphorum (Cookson et Eisenack, 1958) Davey et Williams, 1966
Symplectic hold contractile, a spherical spherical body, the wall consists of two layers. The number of protrusions is small (each board area only
A>, hollow, distal tip open, but vertical protrusion may be closed. Reflect the plate is: 3 ', 6 忖, 5' ', 1 p, l' '' 'and an indefinable number of vertical groove protrusion.
Discussion Belongs to the absence of cingulum protuberances, with few or no ragger protrusions. The difference between it and Oligosphaeridium
Is a protuberant tubular-dome shape with their bases closer to each other and the distal poles typically do not expand.
Distribution and Era Australia, Romania and England, Middle and Late Epoch, Xinjiang, China Tarim Basin West
Ministry, Eocene.
Holotype: He Chengquan, 1991, pl.15, fig.10; text-fig.22.
Age: Late Turonian-early Senonian.
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description The body is round. Wall thin, two layers, the inner and outer walls close to or only in the base of the separation of the separation, open z outer wall surface smooth - granular, with more plate protrusions around the circumference of about 13, the protrusions formed by the outer wall, short and hollow Slightly thinner distal, truncate-dorsal at the ends, more consistent in length but different in width and smooth in surface. In addition there are 1-2 rod-shaped protrusions. Whether the archeopyle exists is still not sure.
The body diameter of about 33μm, 8-10μ long protrusions, m, most of the protrusions wide 3-6μm.
This new species is similar in morphology to Hystrichosphaeridium raritanianum in the Late Jersey, New Jersey, USA, but the former is smaller in body, with more protuberances and slightly more distal Thin and not expanded, the end of a micro-concave cut and so on.
Location and stratigraphy: Wucha County Bashibulaxi z Wuyi Tucker group bottom.
Litosphaeridium Davey et Williams, 1966
Pattern species Litosphaeridium siphoniphorum (Cookson et Eisenack, 1958) Davey et Williams, 1966
Symplectic hold contractile, a spherical spherical body, the wall consists of two layers. The number of protrusions is small (each board area only
A>, hollow, distal tip open, but vertical protrusion may be closed. Reflect the plate is: 3 ', 6 忖, 5' ', 1 p, l' '' 'and an indefinable number of vertical groove protrusion.
Discussion Belongs to the absence of cingulum protuberances, with few or no ragger protrusions. The difference between it and Oligosphaeridium
Is a protuberant tubular-dome shape with their bases closer to each other and the distal poles typically do not expand.
Distribution and Era Australia, Romania and England, Middle and Late Epoch, Xinjiang, China Tarim Basin West
Ministry, Eocene.