 Shell discoidal; umbilicus shallow; somewhat less than the diameter of the last whorl from the ventral to the peripheral side, and showing all the inner turns; volutions increasing gradually in size, very slightly embracing, compressed so as to be nearly...  REPORT OF THE EXPLORING EXPEDITION - Page 132by PROF. J.S. NEWBERRY - 1876Full view - About this book
 | John N. Macomb, John Strong Newberry, United States. Army. Corps of Engineers, Fielding Bradford Meek - 1876 - 238 pages
...Same as preceding. Genus PRIONOCYCLUS, Meek. PBIONOCYCLUB f MAOOMBI, Meek. Plate II, figs. 3 a, b. e, d. Shell discoidal; umbilicus shallow, somewhat less...outline ; lateral margins of the periphery each having а ГОW of small compressed nodes, arranged one at the termination of each of the costee, with their... | |
 | 1876 - 544 pages
...; volutions iucreasiug rather rapidly in dorso- ventral diameter, aud more gradually in convexity, compressed so as to be nearly flat on the sides, but rounding a little into the immediate umbilicus and to the periphery, each so deeply embracing as to hide all... | |
 | Timothy William Stanton - 1893 - 392 pages
...to the Junction of Grand & Green Rivers, Geol. Rept., p. 132, PI. 2, Figs. . Original description: "Shell discoidal; umbilicus shallow; somewhat less...nodes, arranged one at the termination of each of the costae, with their long diameters nearly parallel to the peripheral keel ; sides of each turn ornamented... | |
 | 1893 - 896 pages
...the Junction of Grand & Green Rivers, Geol. Kept., p. 132, PL 2, Fige. 3a-d. Original description: " Shell 'discoidal; umbilicus shallow; somewhat less...carina, which is very slightly waved in outline; lateral inai'gins of the periphery each having a row of small compressed nodes, arranged one at the termination... | |
 | Geological Survey (U.S.) - 1893 - 1080 pages
...the last whorl from the ventral to the peripheral side, and showing all the inner turns; -volution s increasing gradually in size, very slightly embracing,...nodes, arranged one at the termination of each of the costee, with their long diameters nearly parallel to the peripheral keel; sides of each turn ornamented... | |
 | 1898 - 612 pages
...side, and showing all the inner turns ; volutions increasing greatly in size, very slightly embracing, so as to be nearly flat on the sides, but rounding...having a row of small, compressed nodes, arranged at the termination of each of the costae, with their long diameters nearly parallel to the peripheral... | |
 | Kansas Geological Survey - 1898 - 616 pages
...side, and showing all the inner turns ; volutions increasing greatly in size, very slightly embracing, so as to be nearly flat on the sides, but rounding...having a row of small, compressed nodes, arranged at the termination of each of the costtu, with their long diameters nearly parallel to the peripheral... | |
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