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Turbiosphaera symmetrica
From Fensome et al., 2019:
Turbiosphaera symmetrica Bujak in Bujak et al., 1980, p.90, pl.22, figs.6–8.
Holotype: Bujak et al., 1980 pl.22, fig.6.
Paratypes: Bujak in Bujak et al., 1980
Locus typicus: Middle Barton Beds, Whitecliff Bay, Isle of Wight, southern England
Stratum typicus: Late Eocene
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Original description: Bujak in Bujak et al., 1980, p. 90
Diagnosis: Central body subspherical to ellipsoidal, sometimes with an apical boss. Periphragm fibrous, forming fibrous processes that are progressively longer from the paracingulum to the poles. The precingular processes are connected to each other and to the apical processes by erect fibrous fenestrate membranes. The antapical and postcingular processes are similarly connected, as are adjacent cingular processes. Three zones of interconnected processes are thus formed, with the membranes sometimes being indistinguishable from the processes. Occasionally, the cingular processes may be connected to the precinguar and postcingular processes by thin fibrous membranes, but remain distinct. The processes, when distinguishable, reflect a paratabulation of ?4", 6"", xc, 5- ?6""", 1"""", with one intratabular process per paraplate. Archaeopyle precingular, formed by the detachment of paraplate 3"".
Dimensions: Central body length = 59-70 µm, breadth = 53-67 µm. Maximum process length = 26-42 µm. Maximum cingular process length = 7-18 µm. Number of specimens measured = 15.
Affinities:
Bujak in Bujak et al., 1980, p. 90
Forma F described by Evitt (1961) from the Eocene of the U.S.A., and T. filosa (Wilson 1967) Archangelsky, 1969, from the Lower Tertiary (?Eocene) of Antarctica differ from T. symmetrica in having unconnected apical and precingular, and antapical and postcingular processes.
Turbiosphaera symmetrica Bujak in Bujak et al., 1980, p.90, pl.22, figs.6–8.
Holotype: Bujak et al., 1980 pl.22, fig.6.
Paratypes: Bujak in Bujak et al., 1980
Locus typicus: Middle Barton Beds, Whitecliff Bay, Isle of Wight, southern England
Stratum typicus: Late Eocene
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Original description: Bujak in Bujak et al., 1980, p. 90
Diagnosis: Central body subspherical to ellipsoidal, sometimes with an apical boss. Periphragm fibrous, forming fibrous processes that are progressively longer from the paracingulum to the poles. The precingular processes are connected to each other and to the apical processes by erect fibrous fenestrate membranes. The antapical and postcingular processes are similarly connected, as are adjacent cingular processes. Three zones of interconnected processes are thus formed, with the membranes sometimes being indistinguishable from the processes. Occasionally, the cingular processes may be connected to the precinguar and postcingular processes by thin fibrous membranes, but remain distinct. The processes, when distinguishable, reflect a paratabulation of ?4", 6"", xc, 5- ?6""", 1"""", with one intratabular process per paraplate. Archaeopyle precingular, formed by the detachment of paraplate 3"".
Dimensions: Central body length = 59-70 µm, breadth = 53-67 µm. Maximum process length = 26-42 µm. Maximum cingular process length = 7-18 µm. Number of specimens measured = 15.
Affinities:
Bujak in Bujak et al., 1980, p. 90
Forma F described by Evitt (1961) from the Eocene of the U.S.A., and T. filosa (Wilson 1967) Archangelsky, 1969, from the Lower Tertiary (?Eocene) of Antarctica differ from T. symmetrica in having unconnected apical and precingular, and antapical and postcingular processes.