. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. arms 10, bearing bifurcating pinnules; ventral tube large, having a spiral form somewhat like the cast of a Murchisonia, and covered with hexagonal plates; column pentagonal and pen- tapartite. Type O. laxus. compactus, Meek, 1873, (Hete- rocrinus constrictus var. com- pactus,) Ohio Pal., vol. 1, pi. Pio. 371. 11, Hud. Riv. Gr. Oliloorlnos constrictus. Hall, 1866. (Hete-""™P"*'^"'- rocrinuB con


. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. arms 10, bearing bifurcating pinnules; ventral tube large, having a spiral form somewhat like the cast of a Murchisonia, and covered with hexagonal plates; column pentagonal and pen- tapartite. Type O. laxus. compactus, Meek, 1873, (Hete- rocrinus constrictus var. com- pactus,) Ohio Pal., vol. 1, pi. Pio. 371. 11, Hud. Riv. Gr. Oliloorlnos constrictus. Hall, 1866. (Hete-""™P"*'^"'- rocrinuB constrictus,) 24th Rep. N. Y. St. Mus. Nat. Hist., p. 210, Hud. Riv. Gr. laxus. Hall, 1866, (Hete- rocrinus laxus,) 24th Rep. N. Y. St. Mus. Nat. Hist., p. 211, Hud. Riv. Gr. cehanus, Ulrich, 1882, (Heterocrinus cehanus,) Jour. Cin. Soc Nat. Hist., vol. 5, p. 175, Hud. Riv. Gr. Oligoporus, Meek & Wor-. then, 1860, Proc. Acad. Nat. ^l Phil., p. 474. [Ety. oligos, few; poros, passage] In form like Melonites, but distinguished by having only four rows of ambula- cral plates, and four double rows of Sores in each ambulacral area. Type '. danee. Desor used the name Oligo- pores, in 1868, for a section of tne Cidaridse, and Prof. Meek said if desir- able to change Oligoporus, for that reason he would suggest Melonopsis in its place, coreyi. Meek & Worthen, 1870, Proc. Acad. Nat. Sci. Phil., p. 34, Keo- kuk Fig. 372. OliiocrliiuB 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 Miller, S. A. (Samuel Almond), 1836-1897. Cincinnati : [s. n. ]


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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology