. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fig. .389—Pelrtister bellulus. bellulns, Billings, 1865, Pal. Foss., vol. 1, p. 393, Niagara Gr. ri(iidus, Billings, 1857, (Palseasterina rig- idus,) Rep. of Progr. Geo. Sur. Can., p. 291, and Can. Org. Rem., Decade 3, p. 80, Trenton Gr. w'dherianus, see Palaeaster wilberanus. Philiicrinus, Koninck, 1863. [Ety. philos, favorite; krinon, lily.] peh'is, M-ek & Worthen, 1865, Am. Jour. Sci., 2d series, vol. 39, s
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fig. .389—Pelrtister bellulus. bellulns, Billings, 1865, Pal. Foss., vol. 1, p. 393, Niagara Gr. ri(iidus, Billings, 1857, (Palseasterina rig- idus,) Rep. of Progr. Geo. Sur. Can., p. 291, and Can. Org. Rem., Decade 3, p. 80, Trenton Gr. w'dherianus, see Palaeaster wilberanus. Philiicrinus, Koninck, 1863. [Ety. philos, favorite; krinon, lily.] peh'is, M-ek & Worthen, 1865, Am. Jour. Sci., 2d series, vol. 39, syn. for Eriso- crinus typus. Pholidocidakis, Meek & Worthen, 1869, Proc. Aiad. Nat. Sci, Pl)il., p. 77. [Ely. ph-iltdos, scale ; , turban.] Inter- ambiilacrals thin, irregular, imbricating upward and laterally; five or more rows; only two reaching the extremi- ties; marginal rows and those on the lower side having primary tubercles, showing a pit in the top, and being surrounded by two rings; ambulacra! areas wide, with six or more rows of plates imbricating downward, «ach plate pierced by two pores, and the larger ones having additional pores. Type P. irregularis. irregularis, M • k & Worthen, 1869, Proc. Acad. N. t. Sci. Phil., p. 78, and G?o. Sur. 111., vol. 5, p. 512, Keokuk Fig. K9(). — Physetocriiius eopei. Phil. p. ]()2, and Geo. Physetocrinuh, Me^k & Worthen, 18(59, Proc. Acad. Nat. Sci. Phil., p. 158. [Ely. physetos, inflated; krinon, lily.] Distinguishetl fn m Actinocrinus, in the f(»rin and construction of the vault, which has no proboscis, and has pores aliiUij the radial portions of the dome; and, al.'*o, in having no hook-like pro- jections along the pinnules. Type P. ventricosus. asper, Meek & Worthen, 1869, Proc. Ac»d. Nat. Sci. Phil., p. 161, and Geo. Sur. III., vol. 5, p. 351, Burlington Gr. c o p e i , S. A. Idiller, 18 81, ( Actinocrinus copei,) Jour. Cin. Soc. Nat. Hist., vol. 4, p. 310, Burling- ton Gr. dilalatus. M
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