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Spiniferites alatus
Spiniferites alatus Duxbury, 1977
Holotype: Duxbury, 1977, pl.2, fig.4
Locus typicus: Division D4B, Speeton Clay, Speeton, England
Stratum typicum: Valanginian
Original diagnosis Duxbury, 1977, p.49:
A species of Spiniferites with a fairly thick-walled, granular endophragm and periphragm. The periphragm is produced into long (about half main body width) gonal processes which are distally trifurcate. The gonal processes are laterally connected by high, perforate crests which bear bifurcate sutural processes. Archeopyle precingular, probably formed by loss of plate 3".
Observed Dimensions: Holotype 92 x 86 µm. Overall 92(82)72 x 94(76)63 µm. Specimens Measured: 9.
Holotype: Duxbury, 1977, pl.2, fig.4
Locus typicus: Division D4B, Speeton Clay, Speeton, England
Stratum typicum: Valanginian
Original diagnosis Duxbury, 1977, p.49:
A species of Spiniferites with a fairly thick-walled, granular endophragm and periphragm. The periphragm is produced into long (about half main body width) gonal processes which are distally trifurcate. The gonal processes are laterally connected by high, perforate crests which bear bifurcate sutural processes. Archeopyle precingular, probably formed by loss of plate 3".
Observed Dimensions: Holotype 92 x 86 µm. Overall 92(82)72 x 94(76)63 µm. Specimens Measured: 9.