. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 989.—Creplceplifi- 4 lilianuB. Py^lil- in. Bull. U. S. (leo. r. Up. Taconii'. field, 1877, U. S. el, vol. 4, p. 215, , Geo. Sur. Wis., 1, fig. 14, Pots- 1876, Rep. Re- lat. Park, p. 141, eld, 1877, U. 8. lei, vol. 4, p. 212, , Ann. Rep. Geo. r. 1861,(Anonenua ,)Proc. Acad. Nat. tsdam Gr. Rep. on Pal. of md Geol. Black Gr. he quadranp. field, 1877, U. S. el, vol. 4, p. 218, itfield,1877, U. S. tel, vol. 4, p. 216,

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. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. 989.—Creplceplifi- 4 lilianuB. Py^lil- in. Bull. U. S. (leo. r. Up. Taconii'. field, 1877, U. S. el, vol. 4, p. 215, , Geo. Sur. Wis., 1, fig. 14, Pots- 1876, Rep. Re- lat. Park, p. 141, eld, 1877, U. 8. lei, vol. 4, p. 212, , Ann. Rep. Geo. r. 1861, (Anonenua , )Proc. Acad. Nat. tsdam Gr. Rep. on Pal. of md Geol. Black Gr. he quadranp. field, 1877, U. S. el, vol. 4, p. 218, itfield, 1877, U. S. tel, vol. 4, p. 216, (Conocephalites vol. 1, p. 14, Pots- jhocephalus wis- our. Acad. Nat. Dalmanites. Not name was prcoc- jf Coleoptera in otlii. callitfles. es callitelei'. iicleus. coiicentrlcuH. 110, Ofversigt 1, p. 110. 18 spfoifs lielonirs irup, and the spe- •iipied, the name ;u8.. Fig. 990.—Cyplias- pi8 christyi. 1888 7, p Cydus americanus, Packard, 1885, Am. Nat., vol. 19, p. 293, Coal Meaa. Not de- fined so as to be recognized. CvpitAsris, Burmeister, 1843, Die Organ der Trilobiten, p. 103. [Rty. cypfioa, con- vex^ aspis, shield.] Cephalic shield semicircular, posterior angles produced in spines, margin thickened; glabella very convex, ovoid, no furrows, but with two small pyri'orm basal lobes bounded by deep furrows; eyes small, semilunate; cheeks broad; facial su- tures proceed in a nearly straight line, from the anterior margin to the eyes, and are then directed to the posterior an- gles; thorax 10 to 17 segments, rounded at their extremities; axis tapering; pygidium small, axis short, lateral lobes depressed. Type C. ceratopthalmus. brevimarginatus, Walcott, 1885, Monogr, U. S. Geo. Sur., vol 8, p. 93, Trenton Gr. ch risty i. Hall, Trans. Alb Inst., vol. 4, p. 188, Ni agara Gr. coelebs. Hall, 1888, Pal N. Y., vol. 7, p. 151 Low, Held. Gr. craspedota, Hall, 1888 Pal. N. Y., vol. 7, p: 148, Ham. Gr. diadema. Hall, Pal. N. Y., vol 144, Up. Held. Gr girardeauensis, Shumard, 1855,

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