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Cymatiosphaera pterota
Cymatiosphaera pterota Cookson and Eisenack, 1958
Originally Cymatiosphaera, subsequently Spiniferites, thirdly Hystrichosphaera, fourthly Spiniferites?.
Tax. jr. synonym of Cymatiosphaera (now Pterodinium) cingulata O. Wetzel, 1933, according to Below, 1981.
Tax. sr. synonym of Spiniferites crassimuratus (Davey and Williams, 1966) Sarjeant, 1970, according to Kjellstr÷m, 1973.
Holotype: Cookson and Eisenack, 1958, pl.11, fig.7
Locus typicus: W. A., Gingin area, Seismic shot hole B 2, at 230 ft.
Stratum typicum: Albian
Original diagnosis: Cookson and Eisenack, 1958, p.50
Shell spherical, smooth, its surface divided into large fields by thin, smooth, relatively high membranes perpendicular to the surface. The margins of the membranes are frequently concave and sometimes minutely serrated.
Originally Cymatiosphaera, subsequently Spiniferites, thirdly Hystrichosphaera, fourthly Spiniferites?.
Tax. jr. synonym of Cymatiosphaera (now Pterodinium) cingulata O. Wetzel, 1933, according to Below, 1981.
Tax. sr. synonym of Spiniferites crassimuratus (Davey and Williams, 1966) Sarjeant, 1970, according to Kjellstr÷m, 1973.
Holotype: Cookson and Eisenack, 1958, pl.11, fig.7
Locus typicus: W. A., Gingin area, Seismic shot hole B 2, at 230 ft.
Stratum typicum: Albian
Original diagnosis: Cookson and Eisenack, 1958, p.50
Shell spherical, smooth, its surface divided into large fields by thin, smooth, relatively high membranes perpendicular to the surface. The margins of the membranes are frequently concave and sometimes minutely serrated.