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Spiniferites ramosus var. brevifurcatus
Spiniferites ramosus var. brevifurcatus Cookson and Eisenack, 1974
Now Spiniferites ramosus ssp. brevifurcatus. Originally Spiniferites ramosus var. brevifurcatus, subsequently (and now) Spiniferites ramosus ssp. breuifurcatus.
Tax. sr. synonym of Spiniferites cornutus ssp. sinefurcatus (Cookson and Eisenack, 1974) Lentin and Williams, 1977, according to Below, 1982.
Holotype: Cookson and Eisenack, 1974, pl.21, fig.6
Age: Turonian-Senonian.
Original diagnosis: Cookson and Eisenack, 1974, p.58
Shell oval, smooth, provided with relatively short processes which are predominantly gonal ones and are limited to the apical-, antapical-, and girdle-area. Also sutural processes are occasionally and sporadically present. The furcation-prongs, generally only 2 are likewise short. Transversal furrow, cingulum, highly helicoidal, always well developed. Longitudinal furrow therefore frequently lying in slanted direction, always distinct. "Spanning-membranes" more or less well developed.
Dimensions: Type: shell 42 x 38 µm, overall about 65 x 64 µm.
Occurrence: In the Madura 1 bore, at 1018-1073 ft. (locus typicus); also in the Rough Range South, core 62 (Plate 2, Figure 9) and otherwise also not rare.
Now Spiniferites ramosus ssp. brevifurcatus. Originally Spiniferites ramosus var. brevifurcatus, subsequently (and now) Spiniferites ramosus ssp. breuifurcatus.
Tax. sr. synonym of Spiniferites cornutus ssp. sinefurcatus (Cookson and Eisenack, 1974) Lentin and Williams, 1977, according to Below, 1982.
Holotype: Cookson and Eisenack, 1974, pl.21, fig.6
Age: Turonian-Senonian.
Original diagnosis: Cookson and Eisenack, 1974, p.58
Shell oval, smooth, provided with relatively short processes which are predominantly gonal ones and are limited to the apical-, antapical-, and girdle-area. Also sutural processes are occasionally and sporadically present. The furcation-prongs, generally only 2 are likewise short. Transversal furrow, cingulum, highly helicoidal, always well developed. Longitudinal furrow therefore frequently lying in slanted direction, always distinct. "Spanning-membranes" more or less well developed.
Dimensions: Type: shell 42 x 38 µm, overall about 65 x 64 µm.
Occurrence: In the Madura 1 bore, at 1018-1073 ft. (locus typicus); also in the Rough Range South, core 62 (Plate 2, Figure 9) and otherwise also not rare.