. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fio. 241—Agelacrl- nuHcincliiiiatien- hIs. ing of B double aeries of alternatiDg plates, forming convex ridges, consti- tuting purt of tlie upper face, and bear- ing two or more rows of ambulacral pores; ovarian or anal aperture is situ- ated within the azygous interambula- cral area, surrounded by cuneiform f)lateB. Type A. hamiltonensis. lingsi. Chapman, 1860, Can. Jour., vol. 5, p. 358, Trenton Gr, cincinnatien
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fio. 241—Agelacrl- nuHcincliiiiatien- hIs. ing of B double aeries of alternatiDg plates, forming convex ridges, consti- tuting purt of tlie upper face, and bear- ing two or more rows of ambulacral pores; ovarian or anal aperture is situ- ated within the azygous interambula- cral area, surrounded by cuneiform f)lateB. Type A. hamiltonensis. lingsi. Chapman, 1860, Can. Jour., vol. 5, p. 358, Trenton Gr, cincinnatiensis, Roemer, 1851, Verh. Naturh, Rhein. Wfstph., vol. 8, p. :S72, and Ohio Pal. vol. 1, p. h\ Hud. Riv. Gr. dicksoni, Billings, 1857, Rep. of Progr. Geo, Sur. Can., p. 294, uud Cun. Org. Rem., Dec. ade3,,TrentonGr. hamiltonensis, Vanuxem, 1842, Geo. Rep. 3(1 Dist. N. Y., p. 168, Ham. Gr. holbrookl, James, 1887, Jour. Cin. Soc. Nat. Hist., vol. 10, p. 25. Hud. Riv. Gr. kaBkaskienais, see Euhinodiscus kacikaski- ensis. pileus, Hall, 1866, Adv. sheets, 24th Rep. N. Y. St. Mus. Nat. Hist., p. 214, and Ohio Pal., vol. 1, p. 66, Hud. Riv. Gr. septembrachiatus. Miller & Dver, 1878, Jour. Cin. Soc. Nat. Hist., vol. 1, p. 27, Hud Riv. Gr. squamosus, Meek & Worthen, 1868, Proc. Acad. Nat. Sci. Phil., p. 367, and Geo. Sur. III., vol. 5, p. 573, Keokuk <tr. tUllatuK, see Hemicystites stellatus. vorticellatuB, Hall, 1866, Adv. sheets, 24th Rep, N. Y. St. Mus. Nat. Hist., p. 215, and Ohio Pal., vol. 1, p. 67, Hud. Riv. (Jr. Allaoecrinus, Etheridge & Carpenter, 1881, Ann. and Mag. Nat. Hist., p, 281. [Ety. allage, change; krinon, lily.] Calyx minute, pvriform, without ornamenta- tion; baeaIsS, anchylosed; radialslxS; arms 10; interradials none; column round. Type A, austini, carpenter!, Wachsmuth, 1882, Bull. No. 1, III. St. Mus. Nat. Hist., p. 40, and Geo. Sur. 111., vol. 7, p. 341, Kaskaskia Gr, Allocrinus, Wachsmuth and Springer, (in press,) Geo, Sur. 111., vol. 8,
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