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Nelsoniella tuberculata
Nelsoniella tuberculata Cookson and Eisenack, 1960
Holotype: Cookson and Eisenack, 1960, pl.1, fig.14
Locus typicus: Carnavron Basin, Australia
Stratum typicum: Santonian-Campanian
Original description: Cookson and Eisenack, 1960, p.4
Shell nearly circular, epitheca with a prominent horn which arised gradually and is terminated by a small "plug" which is frequently inverted. The ornament of the epitheca is usually in the form of small tubercles or large granules, some of which are arranged in curved lines on either side of the pylome and which extend from near the base to the apex of the epitheca; in some examples the dorsal surface is unornamented . The pylome is semicurcular to broadly triangular.
Holotype: Cookson and Eisenack, 1960, pl.1, fig.14
Locus typicus: Carnavron Basin, Australia
Stratum typicum: Santonian-Campanian
Original description: Cookson and Eisenack, 1960, p.4
Shell nearly circular, epitheca with a prominent horn which arised gradually and is terminated by a small "plug" which is frequently inverted. The ornament of the epitheca is usually in the form of small tubercles or large granules, some of which are arranged in curved lines on either side of the pylome and which extend from near the base to the apex of the epitheca; in some examples the dorsal surface is unornamented . The pylome is semicurcular to broadly triangular.