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Nematosphaeropsis wrennii
Nematosphaeropsis? wrennii McMinn, 1992
McMinn, 1992, questionably included this species in Nematosphaeropsis.
Holotype: McMinn, 1992, pl.3, figs.19-20
Locus typicus: ODP Site 765, N of Port Hedland (Australia), E Indian Ocean
Stratum typicum: Late Miocene
Original diagnosis: McMinn, 1992, p.435
Spiniferate cyst with gonal processes and low proximal connecting septa. Opposite paracingular processes are connected across the paracingulum by fine trabeculae.
Original description: McMinn, 1992, p.435
Small, egg-shaped cyst composed of a thin, >1Ám, smooth autophragm, which is porduced into gonal processes and basal connecting septa. Opposite paracingular processes are joined across the paracingulum by fine trabeculae. Paracingular processes are larger and are associated with higher basal septae. Paratabulation is standard gonyaulacean: 4", 6c, 6"", 6""", 1p, 1""""; the archaeopyle is precingular type 1P; and the operculum is detached.
Affinities:
McMinn, 1992, p.435: Nematosphaerosis? wrennii differs from other species of Nematosphaeropsis in having only trabeculae connecting partacingular processes across the paracingulum and having well-developed basal connecting septa. In this regards, N.? wrennii is intermediate in morphology between Nematosphaeropsis and Spiniferites.
McMinn, 1992, questionably included this species in Nematosphaeropsis.
Holotype: McMinn, 1992, pl.3, figs.19-20
Locus typicus: ODP Site 765, N of Port Hedland (Australia), E Indian Ocean
Stratum typicum: Late Miocene
Original diagnosis: McMinn, 1992, p.435
Spiniferate cyst with gonal processes and low proximal connecting septa. Opposite paracingular processes are connected across the paracingulum by fine trabeculae.
Original description: McMinn, 1992, p.435
Small, egg-shaped cyst composed of a thin, >1Ám, smooth autophragm, which is porduced into gonal processes and basal connecting septa. Opposite paracingular processes are joined across the paracingulum by fine trabeculae. Paracingular processes are larger and are associated with higher basal septae. Paratabulation is standard gonyaulacean: 4", 6c, 6"", 6""", 1p, 1""""; the archaeopyle is precingular type 1P; and the operculum is detached.
Affinities:
McMinn, 1992, p.435: Nematosphaerosis? wrennii differs from other species of Nematosphaeropsis in having only trabeculae connecting partacingular processes across the paracingulum and having well-developed basal connecting septa. In this regards, N.? wrennii is intermediate in morphology between Nematosphaeropsis and Spiniferites.