. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. getniuispinoss, Hartt, 1868, (Conocepha- lites getninispinoBUB,) Acad. Geol., p. 653, St. John Gr. kingi, Meek, 1870, P r o c . Acad. Nat. 8<'i. Phil., vol. 22, p. 63, and Rep. on 40th Par- allel, p. 20, Up. Taconic. quadrana. Hall & Whitfield, 1877, (Crepicephalus qiiadran9,)Geo. 40th Parallel, vol. 4, p. 238, Up. Taconic. walcotti, Mat- thew, 18 84, Trans. Roy. Soc. Can., p. 119, St. John Gr. Cormura, Hal
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. getniuispinoss, Hartt, 1868, (Conocepha- lites getninispinoBUB,) Acad. Geol., p. 653, St. John Gr. kingi, Meek, 1870, P r o c . Acad. Nat. 8<'i. Phil., vol. 22, p. 63, and Rep. on 40th Par- allel, p. 20, Up. Taconic. quadrana. Hall & Whitfield, 1877, (Crepicephalus qiiadran9,)Geo. 40th Parallel, vol. 4, p. 238, Up. Taconic. walcotti, Mat- thew, 18 84, Trans. Roy. Soc. Can., p. 119, St. John Gr. Cormura, Hall, 1888, Pal. N. Y., vol. 7, p. 32. Founded upon the variation in the spines of the pyeidium of Dalmanites. CorycephcUus, Hall, 1888, syn. for Dalman- ites. Crepicephalus, Owen, 1852, Geo. Sur. Wis. Iowa, and Minn., p. 876. [Ety. krepig, horseshoe; kephale, head.] Glabella rather flat, slipper-shaped, tapering and slightly acuminated anteriorly, with a raint ridge in the median line; two small depressions, and a posterior furrow partially divide the glabella; facial sutures run nearly parallel to the margin of the glabella, and join a thickened, cord-like, anterior, narrow border, inclosing a convex area, nar- rower in front than at the sides; pygid- ium large; axial lobe has four seg- ments, side-lobes bounded by a slightly concave border, which widens poste- riorly, and terminates in long spines, and of which the confines are almost rectangular, witii rounded corners. Type C. iowensia. angulatus, Hall & Whitfield, 1877, U. 8. Geo. Expl. 40th Parallel, vol. 4, p. 220, ' Potsdam Gr. anytus, Hall & Whitfield, 1877, U. S. Geo. Expl. 40th parallel, vol. 4, p. 219, Pots- dam Gr. angusta, Walcott, 1886, Bull. U. S. Geo. Sur., No. 30, p. 208, Up. Taconic. centralis, Whitfield, 1877, Rep. on the Pal. of Black Hills, p. 10, and Geo. Black Hills, p. 341, Potsdam Gr. diadeniatus. Hall, 1863, (Conocephalites diadematus,) 16th Rep. N. Y. St. Mas. Nat. Hist., p. 167, Potsdam Gr.
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