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Spiniferites spongiophragmatus
Spiniferites spongiophragmatus Strauss et al., 2001, p.412–413, pl.4, fig.1: text-fig.4 (part).
Holotype: Strauss et al., pl.4, fig.1. This name was not validly published in Strauss (1991b, p.67–68) and Rusbült and Strauss (1992, p.156, caption to fig.2) since these authors did not provide a description.
Age: middle Miocene.
Original description (Strauss et. al, 2001)
Diagnosis: A large species of Spiniferites with a typically thick wall (up to 5 µm) consisting of an densely alveolar endophragm of spongeous appearance, and a delicate, smooth to granulate periphragm forming gonal and sutural processes with membraneous shafts tapering towards distal narrow triangular bi/trifurcations with acute tips. Parasutural membraneous crests may be formed preferentially around the paracingular paraplates.
Size: endocyst length 74...88 µm, width 62...78 µm, process length 14...25µm
Remarks: Some larger processes may show an internal alveolar structure similar to the endophragm. Spiniferites psongiophragmatus is similar to Spiniferites antistatus Islam, 1982, but differs in having no distinct sutural ledges.
Holotype: Strauss et al., pl.4, fig.1. This name was not validly published in Strauss (1991b, p.67–68) and Rusbült and Strauss (1992, p.156, caption to fig.2) since these authors did not provide a description.
Age: middle Miocene.
Original description (Strauss et. al, 2001)
Diagnosis: A large species of Spiniferites with a typically thick wall (up to 5 µm) consisting of an densely alveolar endophragm of spongeous appearance, and a delicate, smooth to granulate periphragm forming gonal and sutural processes with membraneous shafts tapering towards distal narrow triangular bi/trifurcations with acute tips. Parasutural membraneous crests may be formed preferentially around the paracingular paraplates.
Size: endocyst length 74...88 µm, width 62...78 µm, process length 14...25µm
Remarks: Some larger processes may show an internal alveolar structure similar to the endophragm. Spiniferites psongiophragmatus is similar to Spiniferites antistatus Islam, 1982, but differs in having no distinct sutural ledges.