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Palaeocystodinium powellense
Palaeocystodinium powellense Strauss et al., 2001, p.409, pl.2, figs.6–7.
Holotype: Strauss and Lund, 1992, pl.5, fig.1, designated by Strauss et al. (2001, p.409).
Age: middle Miocene.
Originals description (Strauss et al., 2001):
Diagnosis: A Paleocystodinium species with typically short apical and antapical horns and a relatively large, broad ovoid central body. Generally, the length of the horns never exceeds half of the endocyst length.
Size: total length 110...168 µm, width 20...32 µm, central body length 64...88 µm, horn length 22...28µm
Remarks:
The periphragm of P. powellense is often characteristically wrinkled and folded in the central body region. The specimens from NW Germany seem to be slightly smaller than the Mediterranean ones. Moreover, they often show a distinct dark brownish pigmentation of the periphragm (see Strauss & Lund 1992, pl. 5, fig. 1) which is preferentially concentrated in the polar regions of the endocyst and within the horns.
Holotype: Strauss and Lund, 1992, pl.5, fig.1, designated by Strauss et al. (2001, p.409).
Age: middle Miocene.
Originals description (Strauss et al., 2001):
Diagnosis: A Paleocystodinium species with typically short apical and antapical horns and a relatively large, broad ovoid central body. Generally, the length of the horns never exceeds half of the endocyst length.
Size: total length 110...168 µm, width 20...32 µm, central body length 64...88 µm, horn length 22...28µm
Remarks:
The periphragm of P. powellense is often characteristically wrinkled and folded in the central body region. The specimens from NW Germany seem to be slightly smaller than the Mediterranean ones. Moreover, they often show a distinct dark brownish pigmentation of the periphragm (see Strauss & Lund 1992, pl. 5, fig. 1) which is preferentially concentrated in the polar regions of the endocyst and within the horns.