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Diconodinium tenuistriatum
Diconodinium tenuistriatum Eisenack and Cookson, 1960
Now Lacinidinium. Originally Diconodinium, subsequently (and now) Laciniadinium.
Holotype: Eisenack and Cookson, 1960, pl.1, figs.14-16; Morgan, 1977, pl.2, figs.3a-b
Locus typicus: North of Gingin, W Australia
Stratum typicum: Late Albian-Cenomanian
Original description: Eisenack and Cookson, 1960, p. 4
Shell ovoidal to nearly sphaerical, girdle usually faintly marked, epitheca longer than hypotheca, apical process very short, concave, antapical spine only slightly represented. Shell-membrane thin, ornamented with close rows of regulary and closely arranged small granules which converge towards both apex and antapex. Striation on the ventral surface outwardly directed towards the ends of the girdle, leaving a wide unpatterned area which corresponds in position to a longitudinal furrow.
Dimensions: Type 62 Ám long, 58 Ám broad. Range 48-67 Ám long, 46-60 Ám broad.
Now Lacinidinium. Originally Diconodinium, subsequently (and now) Laciniadinium.
Holotype: Eisenack and Cookson, 1960, pl.1, figs.14-16; Morgan, 1977, pl.2, figs.3a-b
Locus typicus: North of Gingin, W Australia
Stratum typicum: Late Albian-Cenomanian
Original description: Eisenack and Cookson, 1960, p. 4
Shell ovoidal to nearly sphaerical, girdle usually faintly marked, epitheca longer than hypotheca, apical process very short, concave, antapical spine only slightly represented. Shell-membrane thin, ornamented with close rows of regulary and closely arranged small granules which converge towards both apex and antapex. Striation on the ventral surface outwardly directed towards the ends of the girdle, leaving a wide unpatterned area which corresponds in position to a longitudinal furrow.
Dimensions: Type 62 Ám long, 58 Ám broad. Range 48-67 Ám long, 46-60 Ám broad.