. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fi3. Oii-').—t.'yclo- iieinii halla' Fig. 061.—Cyclonema liageri. haceri, Billings, 1862, Pal. Foss., vol. 1, p. 21), Trenton Gr. liallanuni, Salter, 1859, Can. Org. Rem., Decade 1, p. 26, Black Riv. Gr. hamiltoniti>, Hall, 1862, 15th Rep. N. Y. ,Miis. Nat. Hist., p. 47, and Pal. N. Y., vol. 5, pt. 2, p. 87, Ham. Gr. humile, BUlings, 1866, Catal. Sil. Foss. Antic, p. 56, Anticosti (ir. leavenwortlianum.


. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fi3. Oii-').—t.'yclo- iieinii halla' Fig. 061.—Cyclonema liageri. haceri, Billings, 1862, Pal. Foss., vol. 1, p. 21), Trenton Gr. liallanuni, Salter, 1859, Can. Org. Rem., Decade 1, p. 26, Black Riv. Gr. hamiltoniti>, Hall, 1862, 15th Rep. N. Y. ,Miis. Nat. Hist., p. 47, and Pal. N. Y., vol. 5, pt. 2, p. 87, Ham. Gr. humile, BUlings, 1866, Catal. Sil. Foss. Antic, p. 56, Anticosti (ir. leavenwortlianum. Hall, 1858, (Pleurotomaria lea venwort liana,) Trans. Alb. Inst,, voi. 4, p. 24, and Bull. Am. Mus. Nat. Hist., p. 75, Warsaw Gr. liratum. Hall, 1862, 15th Rep. N. Y. Mus. Nat. Hist., p. 47, and Pal. N. Y., vol. 5, pt. 2, p. 35, Ham. Gr. mediocre, Billings, 1866, Catal. Sil. Foss. Antic., , Anticosti Gr. raontrealeuse, Billings, 1862, Pal. Foss., vol. 1, p. 30, Trenton Gr. multiliratnm. Hall, 1862, 15th Rep. N. Y. Mus. Nat. Hist, p. 48, and Pal. N. Y., voi. 5, pt. 2, p. 36, Ham. Gr. obsolesccns, Hall, 1877, 1st Ed. Am. Pal. Foss., p. 243, and Pal. N. Y., vol. 5, pt. 2, J). 38, Chemung Gr. Proposed in- stead of C. obsoleta, Hall, 1876, which was preoccupied, obsoletum. Hall, 1852, Pal. N. Y., vol. 2, p. 90, Clinton Gr. obsdieta, Hall. The name was preoc- (•u|iied. See C. obsolescens. percarinatum, Hall, 1847, (Pleurotomaria percarinata,) Pal. N. Y., vol. 1, p. 177, Trenton and Hud. Riv. Grs. percingulatum, Billings, 1857, Rep. of Progr. Geo. Sur. Can., p. 304, Clinton and Niagara Grs. phii'dra, Billings, 1865, Pal. Foss., vol. 1, p. 188, Quebec Gr. pyramidatum, James, 1874, Cin. Qnar. Jour. Sci., vol. 1, p. 152, Hud. Riv. Gr. rugilineatum. Hall & Whitfield, 1872, 24th Rep. N. Y. Mus. Nat. Hist., p 186, Niagara <ir. semicarinatum, Salter, 1859, Can. Org. Rem., Decade 1, p. 27, Black Riv. Gr. subiingulatum. Hall, 1858, (Pleurotomaria subangulata,) Trans. Alb. I


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