 Surface marked by longitudinal sharp, curving striae, which bend gently backward from the suture, and forward towards the base of the volution, having the greatest curve near the middle, those of the last volution curving abruptly backward to the columellar...  Natural History of New York ...: pt.i-vi - Página 45por New York (State). Natural History Survey - 1879Vista completa - Acerca de este libro
 | New York State Museum - 1862 - 598 páginas
...SURFACE marked by longitudinal sharp curving striffi, which bend backwards from the suture and forwards towards the base of the volution, having the greatest curve near the middle : strise separated by sharply defined grooves, which are a little wider than the ridges; the strise... | |
 | Kentucky Geological Survey, Henry Nettelroth - 1889 - 392 páginas
...by longitudinal, sharp, curving striae, which bend gently backward from the suture, and forward to the base of the volution, having the greatest curve...the last volution curving abruptly backward to the colurnellar lip. Striae separated by distinctly defined grooves, which are a little wider than the... | |
 | Maryland Geological Survey - 1913 - 748 páginas
...Description. — " Shell elongate; volutions moderately convex, about thirteen in the largest specimens, very gradually increasing in size from the minute...the columellar lip; striae separated by distinctly defined grooves which are a little wider than the ridges; the striae increasing in distance as the... | |
 | Indiana. Department of Geology and Natural Resources - 1901 - 936 páginas
...longitudinal, sharp, curving striae, which bend gently backward from the suture, and forwards toward the base of the volution, having the greatest curve...the columellar lip. Striae separated by distinctly defined grooves which are a little wider than the ridges; the striae increasing in distance as the... | |
 | Indiana. Department of Geology and Natural Resources - 1901 - 932 páginas
...longitudinal, sharp, curving striae, which bend gently backward from the suture, and forwards toward the base of the volution, having the greatest curve...the columellar lip. Striae separated by distinctly defined grooves which are a little wider than the ridges; the striae increasing in" distance as the... | |
 | Wisconsin Geological and Natural History Survey - 1911 - 354 páginas
...pl. 4, fig. 8. Pal. New York, Vol. V, pt 2, 1879, p. 45, pl. XIII, figs. 15, 17. Description : ' ' Shell elongate, subulate. Volutions moderately convex,...the columellar lip. Striae separated by distinctly defined grooves, which are a little wider than the ridges; the striae increasing in distance as the... | |
 | Arthur Clifford Veatch - 1911 - 822 páginas
...longitudinal, sharp, curving stria, which bend gently backward from the suture, and forwards toward the base of the volution, having the greatest curve...the columellar lip. Striae separated by distinctly defined grooves which are a little wider than the ridges; the striae increasing in distance as the... | |
 | Wisconsin Geological and Natural History Survey - 1911 - 352 páginas
...longitudinal sharp, curving striae, which bend gently backward from the suture, and forward towards tho base of the volution, having the greatest curve near...the columellar lip. Striae separated by distinctly defined grooves, which are a little wider than the ridges; the striae increasing in distance as the... | |
 | Geological Survey (U.S.) - 1912 - 178 páginas
...longitudinal, sharp, curving striae, which bend gently backward from the suture, and forwards toward the base of the volution, having the greatest curve...volution curving abruptly backward to the columellar lip. Strise separated by distinctly defined grooves which are a little wider than the ridges; the striae... | |
 | Maryland Geological Survey - 1913 - 742 páginas
...Description. — " Shell elongate; volutions moderately convex, about thirteen in the largest specimens, very gradually increasing in size from the minute...increasing in distance as the shell grows older." Hall, 1879. A specimen in the Maryland Collection shows clearly five whorls and the impression of two... | |
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