. The Crinoidea flexibilia (with an atlas of and 76 plates). Crinoidea, Fossil. TAXOCRINIDAE 353 GNORIMOCRINUS Wachsmuth and Springer Plate XLVII, figs. 1-17 Gnorimocrinus Wachsmuth and Springer, Revision Palaeocrinoidea, pt. i, 1879, p. 50; Proc. Acad. Nat. Sci. Philadelphia, 1890, p. 388.—Zittel-Eastman, Textbook Palaeontology, 1896, p. 163 (2d Ed., 1913, p. 205).—Bather, Rep. British Assoc, for 1898 [1899], p. 923; Treatise on Zoology (Lankester), pt. 3, 1900, p. 189.—Springer, Jour. Geology, XIV, 1906, p. Fig. 47. Gnorimocrinus Taxocrinidae with rays not abutting above interbr
. The Crinoidea flexibilia (with an atlas of and 76 plates). Crinoidea, Fossil. TAXOCRINIDAE 353 GNORIMOCRINUS Wachsmuth and Springer Plate XLVII, figs. 1-17 Gnorimocrinus Wachsmuth and Springer, Revision Palaeocrinoidea, pt. i, 1879, p. 50; Proc. Acad. Nat. Sci. Philadelphia, 1890, p. 388.—Zittel-Eastman, Textbook Palaeontology, 1896, p. 163 (2d Ed., 1913, p. 205).—Bather, Rep. British Assoc, for 1898 [1899], p. 923; Treatise on Zoology (Lankester), pt. 3, 1900, p. 189.—Springer, Jour. Geology, XIV, 1906, p. Fig. 47. Gnorimocrinus Taxocrinidae with rays not abutting above interbrachial areas. Crown rather low and rotund. Infrabasals low, usually exposed, forming small part of calyx wall. Posterior basal elongate. Radianal rhombic, obliquely to lower left of right posterior radial. Interbrachials few or usually wanting, and areas filled with perisome. Primibrachs two. Arms dichotomous, divergent. Column short, not enlarging next to calyx, terminating in a branched root. Genotype. Taxocrinus expansus Angelin. Distribution. Silurian; Gotland and the United States. Gnorimocrinus was proposed by Wachsmuth and Springer as a subgenus to receive all of Angelin's Silurian Taxocrini, with the Devonian Zeacrinus excavatus of Schultze added. From the diagnosis the chief character on which the separation from Taxocrinus was based is clear, as shown by the following extract: " Figure irregular, lacking the bilateral sym- metry of that genus. The basal on the posterior side is exceedingly large, reaching almost to the top of the adjoining first radials. The first anal plate, instead of resting upon the truncated upper side of that basal, leans against the oblique right side and the adjoining first ; That is to say, in present terminology, it has the radianal obliquely below the right posterior radial. That this was the one thing relied upon is emphasized by the note in the Revision of the Palaeocrinoidea, pt. 1, p. 50, under G. distensus: "
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