. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fici. 10;!3.—Mlcro- illseus qutidrl- costatus. Mug- nifled 5 Fig. mu. N ileus macrops. macrops, Billings, 1865, Pal. Foss., vol. 1, p. 273, Quebec Gr. or Up. Taconic. scrutator, Billings, 1865, Pal. Fobs., vol. 1, p. 274, Quebec Gr. or Up. Taconic. Nothizoe, Barrande, Whitfield referred some ovate bodies found in the Potsdam sandstone, without characteristics, to this genus, under the name of Nothozoe vermo
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fici. 10;!3.—Mlcro- illseus qutidrl- costatus. Mug- nifled 5 Fig. mu. N ileus macrops. macrops, Billings, 1865, Pal. Foss., vol. 1, p. 273, Quebec Gr. or Up. Taconic. scrutator, Billings, 1865, Pal. Fobs., vol. 1, p. 274, Quebec Gr. or Up. Taconic. Nothizoe, Barrande, Whitfield referred some ovate bodies found in the Potsdam sandstone, without characteristics, to this genus, under the name of Nothozoe vermontaiia. See Bull. Am. Mus. Nai. Hist., 1884, vol. 1, p. 144. Nuttainia, syn. for Trinucleus. concentrit'll, see Trinucleus concentricus. tparsa, syn. for Homalonotus dekayi. Odonlocflfihalus, Conrad, 1840, Am. Geo. Rep. N. Y. Not properly defined. selenujus, see Dalmanites selenurus. Odontochile, syn, for Dalmanites. Ogvoia, Brongniart, 1822, Hist. Nat. Crust. Fobs., p. 28. [Ety. mythological name.] Flat or slightly convex; cephalic shield semicircular; glabella wider in front, with three lateral furrows on each side; eyes large, lunate, affixed centrally near the glabella, facial suture marginal in front, curving like the letter S, and terminating posteriorly midway be- tween the outer angle of the cephalic shield and thoracic axis; thornx with narrow axis, pointed pleura', grooved, obscure, and remote fulcrum; eight segments; pygidium many segments. Bides with radiating furrows, the inter- stices of which are divided by half rays. Type O. guettardi. klotzi, Rominger, 1887, Proc. Acad. Nat. Sci. Phil,, p. 12, Potsdam (ir. parabola, Hall & Whitfield, syn. for Ba- th yuriscus product us. problematica, Walcott, 1885, Monogr. U. S. Geo. Sur., vol. 8, p. 63, Potsdam Gr. serrata, Rominger, eyn. for Olenoides nevadensis. producta. Hall & Whitfield, see Bathyu- ri^cu8 productus. spinosa, see Olenoides spinosus. vetmta see Asaphus vetustus. Olenellus, Hall, 1862,15th Re[).
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