. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fio. 12.—Arthrophycus harlaui. liarlani, Conrad, 1838, (Fucoides harlani,) Ann. Rep. N. Y., p. 113, and Pal. N. Y., vol. 2, p. 6, Medina sandstone. montalto, Simpson, 1888, Diet. Foss., found in Pa. Medina (?) Gr. Arthrostigma, Dawson, 1871, Foss. Plants Canada, p. 41. [Ety. arthron, joint; ttigma, a dot or puncture.] Stems elongated, cylindrical, bifurcating, and ?iving off lateral branches; irregularly urrowed l


. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fio. 12.—Arthrophycus harlaui. liarlani, Conrad, 1838, (Fucoides harlani,) Ann. Rep. N. Y., p. 113, and Pal. N. Y., vol. 2, p. 6, Medina sandstone. montalto, Simpson, 1888, Diet. Foss., found in Pa. Medina (?) Gr. Arthrostigma, Dawson, 1871, Foss. Plants Canada, p. 41. [Ety. arthron, joint; ttigma, a dot or puncture.] Stems elongated, cylindrical, bifurcating, and ?iving off lateral branches; irregularly urrowed longitudinally, with circular leaf scars arranged in whorls, and bear- ing linear rigid leaves with circular i^ases, structure apparently cellular, with a slender vascular axis. Type A. gracile. gracile, Dawson, 1871, Foss. Plants Can., p. 41, Devonian. Artisia, Sternberg, syn. for Sternbergia. transversa, see Sternbergia transversa. Asolanits, Wood, 1860, syn. for Sigillaria. camptotxnia, syn. for Sigillaria monostigma. mnne^hkus, a doubtful species of Sigil- laria. Sigillaria ornithicnoideB. Aitplenites, Gceppert, 1836, Systema Filicum Fossilium. [Ety. Asplmium, a genus of ferns.] elegant, see Eremopteris elegans. ruber, Lesquereux, 1858, Geo. Sur. Pa., vol. 2, p. 864, Coal Meas. This species does not seem to be recognized by Lesquereux in his later work. AsTEKOCARPus, Goeppert, 1836, Syst. Fil. Foss., p. 188. [Ety. aster, star; karpos, fruit.] Fructification on lanceolate pin- nules, marked by large star-like sori. Type A. sternbergi. granuis, Lesquereux, 1870, Geo. Sur. 111., vol. 4, p. 469, Coal Meas. sternbergi, Goeppert, 1836, Syst. Filic. Foss., p. 188, Coal Fio. 13.—AsterophycuB Simplex. AsTEROPHYCUS, Lesqucreux, 1876, 7th Ann. Rep. Geol. Sur. Ind., p. 139. [Ety. aster, star; phykos, a sea-weed.] Stem short, cylindrical; frond expanded and divided star-like from the top of the central axis; segments flattened or in- flated. Type A. coxi.


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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology