 Surface marked by distinct concentric striae, which are sometimes raised in fascicles above the general surface of the shell, and bending gently back from the suture reach the spiral band, crossing which they bend forward more abruptly, making a gentle...  Natural History of New York ...: pt.i-vi - Página 91por New York (State). Natural History Survey - 1879Vista completa - Acerca de este libro
 | New York State Museum - 1862 - 598 páginas
...thickened, and bounded by a well-marked callosity. SUKFACE marked by distinct concentric strise, which are raised in fascicles above the general surface of the...gently back from the suture, reach the spiral band, which is flattened and limited by moderately elevated revolving lines. The spiral band is slightly... | |
 | Kentucky Geological Survey, Henry Nettelroth - 1889 - 392 páginas
...well-marked callosity. Surface marked by distinct, concentric striae, which are sometimes raised into fascicles above the general surface of the shell,...moderately elevated revolving lines, and marked by the retrorsely curving striae, which are less prominent upon it and the adjacent parts than near the suture.... | |
 | Indiana. Department of Geology and Natural Resources - 1901 - 936 páginas
...except toward the aperture. Aperture somewhat elongate; the columellar lip thickened and bounded by a marked callosity. "Surface marked by distinct concentric...forward more abruptly, making a gentle curve to the 45-Qeol. suture below. The spiral band at about three-fourths of the width of the volution below the... | |
 | Indiana. Department of Geology and Natural Resources - 1901 - 932 páginas
...except toward the aperture. Aperture somewhat elongate; the columellar lip thickened and bounded by a marked callosity. "Surface marked by distinct concentric...forward more abruptly, making a gentle curve to the 45-GeoI. suture below. The spiral band at about three-fourths of the width of the volution below the... | |
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