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Nematosphaeropsis crassimuratus
Nematosphaeropsis crassimuratus Strauss et al., 2001, p.406, pl.3, figs.3–4.
Holotype: Strauss et al., 2001, pl.3, fig.3.
Age: late Miocene.
Original description (Strauss et. al, 2001)
Derivation of name: having a thick cyst wall.
Type locality and horizon: Nieder Ochtenhausen borehole (NW Germany), Late Miocene (Gramian).
Diagnosis: A species of Nematosphaeropsis with a thick and distinctive cyst wall, consisting of a thick, densely spongeous endophragm and a smooth to weakly granular periphragm forming the gonal and, only very rarely, intergonal processes, which taper from a broad base to narrow distal trifucations. The bifid tips of trifurcations are connected by thin, thread-like trabeculae. Adjacent processes in the apical and cingular regions may be fused by high parasutural membranes. The shape of the central body varies from almost spherical to broad ovoid.
Size: central body 36...48 µm, processes 9...14µm
Remarks: N. crassimuratus is the only thick-walled species of the genus known so far.
Holotype: Strauss et al., 2001, pl.3, fig.3.
Age: late Miocene.
Original description (Strauss et. al, 2001)
Derivation of name: having a thick cyst wall.
Type locality and horizon: Nieder Ochtenhausen borehole (NW Germany), Late Miocene (Gramian).
Diagnosis: A species of Nematosphaeropsis with a thick and distinctive cyst wall, consisting of a thick, densely spongeous endophragm and a smooth to weakly granular periphragm forming the gonal and, only very rarely, intergonal processes, which taper from a broad base to narrow distal trifucations. The bifid tips of trifurcations are connected by thin, thread-like trabeculae. Adjacent processes in the apical and cingular regions may be fused by high parasutural membranes. The shape of the central body varies from almost spherical to broad ovoid.
Size: central body 36...48 µm, processes 9...14µm
Remarks: N. crassimuratus is the only thick-walled species of the genus known so far.