. The Crinoidea flexibilia (with an atlas of and 76 plates). Crinoidea, Fossil. 264 SMITHSONIAN INSTITUTION ICHTHYOCRINUS Conrad Plates XXXII-XXXVI Ichthyocrinus Conrad, Jour. Acad. Nat. Sci. Philadelphia, VIII, 1842, p. 279.—D'Orbigny, Prodr. Pal. Stratigraphique, I, 1849, p. 46; Cours Elem. Pal. et Geol. Strat, II, 1851, p. 144.—Hall, Nat. Hist. New York, Pal. II, 1852, p. 195; Geol. Iowa, I, pt. 2, 1858, p. 557.—McCoy, Syn. Brit. Pal. Fossils, 1854, p. 54.—Roemer in Bronn, Lethaea Geognostica, I, 1852-54, p. 237.—Pictet, Traite Paleontologie, IV, 1857, p. 319.—Bronn, Klassen Ord. Thi
. The Crinoidea flexibilia (with an atlas of and 76 plates). Crinoidea, Fossil. 264 SMITHSONIAN INSTITUTION ICHTHYOCRINUS Conrad Plates XXXII-XXXVI Ichthyocrinus Conrad, Jour. Acad. Nat. Sci. Philadelphia, VIII, 1842, p. 279.—D'Orbigny, Prodr. Pal. Stratigraphique, I, 1849, p. 46; Cours Elem. Pal. et Geol. Strat, II, 1851, p. 144.—Hall, Nat. Hist. New York, Pal. II, 1852, p. 195; Geol. Iowa, I, pt. 2, 1858, p. 557.—McCoy, Syn. Brit. Pal. Fossils, 1854, p. 54.—Roemer in Bronn, Lethaea Geognostica, I, 1852-54, p. 237.—Pictet, Traite Paleontologie, IV, 1857, p. 319.—Bronn, Klassen Ord. Thier-Reichs, II, i860, p. 231.—Quenstedt, Handb. Petre- faktenkunde, 1867, p. 737; Petref. Deutschlands, IV, 1876, p. 515.—Beyrich, Monatsber. Akad. Wiss. Berlin, 1871, p. 42 (Trans, in Ann. and Mag. Nat. Hist., (4) VII, p. 403). Salter, Cat. Cambrian and Silurian Fossils, 1873, p. 126.—Angelin, Icon. Crin. Sueciae, 1878, p. 13.—Wachsmuth and Springer, Proc. Acad. Nat. 'Sci. Philadelphia, 1878, p. 252; ibid., 1888, p. 353; 1890, p. 387; Revision Palaeocrinoidea, pt. 1, 1879, p. 33; ibid., pt. 3, 1886, p. 143.—Von Zittel, Handbuch Palaeontologie, I, 1879, p. 355; Grundziige Palaeontologie, 1895, p. 138.—Miller, N. A. Geol. and Pal., 1889, p. 256.— Zittel-Eastman, Textbook Palaeontology, 1896, p. 163 (2d Ed., 1913, p. 204).—Bather, Proc. Zool. Soc. London, 1896, p. 998; Natural Science, XII, 1898, p. 341; Ann. and Mag. Nat. Hist., (7) VI, 1900, p. 112; Treatise on Zoology (Lankester), pt. 3, 1900, p. 188.—Weller, Bull. IV, Chicago Acad. Sci., I, 1900, p. 145.—Springer, Amer. Geologist, XXX, 1902, p. 94; Jour. Geology, XIV, 1906, p. 4g^ Fig. 36. Ichthyocrinus Ichthyocrinidae with rays in contact all around. Crown elongate, expand- ing from radials up. Infrabasals entirely within ring of basals, sometimes resorbed. Posterior basal not differentiated. Radianal in primitive position under right posterior radial, touching right anterior radial; smal
Size: 1676px × 1491px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishercityo, bookyear1920
