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Heslertonia striata
Heslertonia striata (Eisenack and Cookson, 1960) Norvick in Norvick and Burger, 1976
Originally Cymatiosphaera, subsequently (and now) Heslertonia.
Holotype: Eisenack and Cookson, 1960, pl.3, fig.11
Age: Cenomanian
Original description (Eisenack and Cookson, 1960)
Age and occurance: Probably Cenomanian: Brickhouse Bore, W.A., at 1,210 ft. ?Upper Albanian to Cenomanian: Osborne Formation, W.A., Fremantle Traffic Bridge Bore No. 5 at 100 ft. Albian: Santo's Oodnadatta Bore, S. A., at 327 ft.; Moora Bore, W.A., at 86-170 ft; Regan's Ford on Moore R., W.A., Wapet's Seismic shot-hole L8 at 240 ft. Aptian: Roma Formation, N.Q., Batavia Downs Well between 45-49 ft.
Description: Shell spherical, thin-walled, bearing high membranes which from large fields. Surface of shell granular; the membranes thin, transparent, and finely striated.
Dimensions: Type-Diameter of shell c. 35 µ, overall diameter c. 70µ. Range-Diameter of shell 35-57 µ, overall diameter 60-76 µ.
Originally Cymatiosphaera, subsequently (and now) Heslertonia.
Holotype: Eisenack and Cookson, 1960, pl.3, fig.11
Age: Cenomanian
Original description (Eisenack and Cookson, 1960)
Age and occurance: Probably Cenomanian: Brickhouse Bore, W.A., at 1,210 ft. ?Upper Albanian to Cenomanian: Osborne Formation, W.A., Fremantle Traffic Bridge Bore No. 5 at 100 ft. Albian: Santo's Oodnadatta Bore, S. A., at 327 ft.; Moora Bore, W.A., at 86-170 ft; Regan's Ford on Moore R., W.A., Wapet's Seismic shot-hole L8 at 240 ft. Aptian: Roma Formation, N.Q., Batavia Downs Well between 45-49 ft.
Description: Shell spherical, thin-walled, bearing high membranes which from large fields. Surface of shell granular; the membranes thin, transparent, and finely striated.
Dimensions: Type-Diameter of shell c. 35 µ, overall diameter c. 70µ. Range-Diameter of shell 35-57 µ, overall diameter 60-76 µ.