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Deflandrea nucula
Deflandrea nucula Cookson and Eisenack, 1962
Now Amphidiadema. Originally Deflandrea, subsequently (and now) Amphidiadema.
Holotype: Cookson and Eisenack, 1962, pl.1, fig.13
Locus typicus: Victoria, Australia
Stratum typicum: Senonian
Original description: Cookson and Eisenack, 1962, p.486
Shell small, slightly flattened, approximately oval in outline, sometimes slightly narrower just above and below the limits of the capsule. Apex broadly rounded with a small pointed projection. Antapex truncate to rounded without horns. Tabulation, girdle, and longitudinal furrow absent. Capsule circular to oval in outline; when oval, somewhat longer than broad, sometimes extending, as in the type, to the lateral margins of the shell. Wall of both shell and capsule smooth. Pylome square with rounded angles, crossed by the upper limit of the capsule.
Dimensions: Holotype: 67 Ám long, 50 Ám broad, capsule 48 Ám long, 50 Ám broad. Range: 52-72 Ám long, 48-56 Ám broad.
Now Amphidiadema. Originally Deflandrea, subsequently (and now) Amphidiadema.
Holotype: Cookson and Eisenack, 1962, pl.1, fig.13
Locus typicus: Victoria, Australia
Stratum typicum: Senonian
Original description: Cookson and Eisenack, 1962, p.486
Shell small, slightly flattened, approximately oval in outline, sometimes slightly narrower just above and below the limits of the capsule. Apex broadly rounded with a small pointed projection. Antapex truncate to rounded without horns. Tabulation, girdle, and longitudinal furrow absent. Capsule circular to oval in outline; when oval, somewhat longer than broad, sometimes extending, as in the type, to the lateral margins of the shell. Wall of both shell and capsule smooth. Pylome square with rounded angles, crossed by the upper limit of the capsule.
Dimensions: Holotype: 67 Ám long, 50 Ám broad, capsule 48 Ám long, 50 Ám broad. Range: 52-72 Ám long, 48-56 Ám broad.