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Spiniferites cornutus var. crassifurcatus
Spiniferites cornutus var. crassifurcatus Cookson and Eisenack, 1974
Originally Spiniferites cornutus var. crassifurcatus, subsequently Spiniferites cornutus ssp. crassifurcatus.
Taxonomic senior synonym (at subspecific rank): Hystrichosphaera cornuta var. laevimura (as Spiniferites cornutus subsp. laevimurus, now Spiniferella cornuta subsp. laevimura), according to Below (1982c, p.33).
Holotype: Cookson and Eisenack, 1974, pl.22, fig.9
Age: Albian-Cenomanian
Original diagnosis: Cookson and Eisenack, 1974, p.63
Shell oval, with relatively short, but sturdy processes, which distally generally bear 3 well developed furcation-branches These can possess minute secondary furcation-prongs. The processes are especially developed in the apical-, girdle-, and antapical-area thus mainly gonally; however, also sutural processes occur. The spanning-membranes are distinct and pull themselves upward onto the processes. The apex bears a slender horn which is mounted with a broad basis and distally bears minute prongs which are just about still discernible.
Dimensions: Central shell about 70 x 58 µm, overall about 110 x 76 µm; processes up to 20 Ám long, horn about 20 µm high, spanning membranes about 3 µm wide.
Occurrence: Balcatta No. 1 bore, at 170 ft.
Originally Spiniferites cornutus var. crassifurcatus, subsequently Spiniferites cornutus ssp. crassifurcatus.
Taxonomic senior synonym (at subspecific rank): Hystrichosphaera cornuta var. laevimura (as Spiniferites cornutus subsp. laevimurus, now Spiniferella cornuta subsp. laevimura), according to Below (1982c, p.33).
Holotype: Cookson and Eisenack, 1974, pl.22, fig.9
Age: Albian-Cenomanian
Original diagnosis: Cookson and Eisenack, 1974, p.63
Shell oval, with relatively short, but sturdy processes, which distally generally bear 3 well developed furcation-branches These can possess minute secondary furcation-prongs. The processes are especially developed in the apical-, girdle-, and antapical-area thus mainly gonally; however, also sutural processes occur. The spanning-membranes are distinct and pull themselves upward onto the processes. The apex bears a slender horn which is mounted with a broad basis and distally bears minute prongs which are just about still discernible.
Dimensions: Central shell about 70 x 58 µm, overall about 110 x 76 µm; processes up to 20 Ám long, horn about 20 µm high, spanning membranes about 3 µm wide.
Occurrence: Balcatta No. 1 bore, at 170 ft.