 | National Museum of Canada - 1913 - 244 páginas
...species. Plate X, fig. 4. Shell of medium size, narrowly elongate-ovate, umbilicated, yellowish white (Nuclear whorls decollated.) Post-nuclear whorls rather high between the sutures, moderately rounded, very feebly shouldered at the summit, marked by fine lines of growth and numerous exceedingly fine,... | |
 | National Museum of Canada - 1913 - 588 páginas
...species. Plate X, fig. 4. Shell of medium size, narrowly elongate-ovate, umbilicated, yellowish white (Nuclear whorls decollated.) Post-nuclear whorls rather high between the sutures, moderately rounded, very feebly shouldered at the summit, marked by fine lines of growth and numerous exceedingly fine,... | |
 | Ida Shepard Oldroyd - 1927 - 406 páginas
...:282 ; PI. 37, fig. 9. Shell of medium size, narrowly elongate-ovate, umbilicated, yellowishwhite. (Nuclear whorls decollated.) Post-nuclear whorls rather high between the sutures, moderately rounded, very feebly shouldered at the summit, marked by fine lines of growth and numerous, exceedingly fine,... | |
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Shell of medium size, narrowly elongate-ovate, umbilicated, yellowishwhite. (Nuclear whorls decollated.) Post-nuclear whorls rather high between the sutures, moderately rounded, very feebly shouldered at the summit, marked by fine lines of growth and... 