. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Ind.mz. 1856, Vol. 4. Whitfield Bull. 3, Amer. Mus. Nat. Hist. 1882, plate 3, figs. 15,16) Collett's Indiana Rt. 1883, page 362, plate 32, fig. 15, enlarged twiee^ type specimen; fig. 15, last volution still further enlarged. —Subcarhoniferous.—XI. Murchisonia turricula. Billings, Rt. of Progress, Can- ada, 1857, Middle Silurian. Hall, 15th Annual Report New York, 1862, page 50, plate 4, fig. 13, much enlarged. Surface marked by strong concentric raised stria
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. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Ind.mz. 1856, Vol. 4. Whitfield Bull. 3, Amer. Mus. Nat. Hist. 1882, plate 3, figs. 15, 16) Collett's Indiana Rt. 1883, page 362, plate 32, fig. 15, enlarged twiee^ type specimen; fig. 15, last volution still further enlarged. —Subcarhoniferous.—XI. Murchisonia turricula. Billings, Rt. of Progress, Can- ada, 1857, Middle Silurian. Hall, 15th Annual Report New York, 1862, page 50, plate 4, fig. 13, much enlarged. Surface marked by strong concentric raised striae above the band, and lower striae below it. Suture line deep, and continued beyond the edge of the lip in a slender spiral line. Length only inch. Like M. desiderata^ but whorls more angular, suture deeper, striae stronger. Hamilton., VIIIc. Murchisonia turritella. (Hall, Trans. Alb. Inst., 1856, '^j Vol. 4.—Whitfield, Bull, 3, 1882, plate 9, fig'. 12.) CoUett's Indiana Report of 1882, page 361, plate 32, fig. 12, enlarged twice. Spergen IncL iSn. ^ Hill, Indiana. Subcarloniferous. XI. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Lesley, J. P. (J. Peter), 1819-1903; Pennsylvania. Board of Commissioners for the Second Geological Survey. Harrisburg, Board of Commissioners for the Geological Survey