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Nematosphaeropsis reticulensis
Nematosphaeropsis reticulensis (Pastiels, 1948) emend. Sarjeant 1986
Originally Cannosphaeropsis, subsequently Adnatosphaeridium, thirdly (and now) Nematosphaeropsis.
The above transfer was also effected by de Coninck, 1986.
Holotype: unrecognizable, according to Sarjeant, 1986
Lectotype: Pastiels, 1948, pl.5, fig.10 (designated by Sarjeant, 1986)
Locus typicus: Belgium
Stratum typicum: Early Eocene
Emended description: Sarjeant, 1986, p. 9
Cyst spiniferate, trabeculate, hercotabulate. Central body spheroidal to broadly ovoidal. Processes gonal in situation, solid or hollow but always closed and furcate distally. Most processes are trifurcate, but the cingular processes are bifurcate. The process furcations are themselves bifurcate, giving rise to trabeculae connecting them to immediately adjacent processes. Length of processes between one-third and one-half the equatorial diameter of the cyst. Surface of phragma typically laevigate; septa between paraplates not marked. Paratabulation gonyaulacoid, indicated by the alignment of the trabeculae only; ?4", 6"", 6c, 6""", Ip, 1"""". Archaeopyle single-plate precingular, type P (3"" only); operculum free.
Originally Cannosphaeropsis, subsequently Adnatosphaeridium, thirdly (and now) Nematosphaeropsis.
The above transfer was also effected by de Coninck, 1986.
Holotype: unrecognizable, according to Sarjeant, 1986
Lectotype: Pastiels, 1948, pl.5, fig.10 (designated by Sarjeant, 1986)
Locus typicus: Belgium
Stratum typicum: Early Eocene
Emended description: Sarjeant, 1986, p. 9
Cyst spiniferate, trabeculate, hercotabulate. Central body spheroidal to broadly ovoidal. Processes gonal in situation, solid or hollow but always closed and furcate distally. Most processes are trifurcate, but the cingular processes are bifurcate. The process furcations are themselves bifurcate, giving rise to trabeculae connecting them to immediately adjacent processes. Length of processes between one-third and one-half the equatorial diameter of the cyst. Surface of phragma typically laevigate; septa between paraplates not marked. Paratabulation gonyaulacoid, indicated by the alignment of the trabeculae only; ?4", 6"", 6c, 6""", Ip, 1"""". Archaeopyle single-plate precingular, type P (3"" only); operculum free.