. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Cyrtacanthus, Newberry, < 1873, Ohio Pal., vol. 1, p. 300. [Ety. kurtos, curved; akantha, spine.] Spine curved, tubercu- lated, single row of con- ical denticles set on the posterior side, limited to the upper portion, and increasing in size from below upward. Type C. den tat us. dentatus, Newberry, 1873, Ohio Pal., vol. 1, p. 307, Up. Held. Gr. Dactylodus, l^ewberry & Wortlien, 1866, Geo. Sur. 111., vol. 2
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Cyrtacanthus, Newberry, < 1873, Ohio Pal., vol. 1, p. 300. [Ety. kurtos, curved; akantha, spine.] Spine curved, tubercu- lated, single row of con- ical denticles set on the posterior side, limited to the upper portion, and increasing in size from below upward. Type C. den tat us. dentatus, Newberry, 1873, Ohio Pal., vol. 1, p. 307, Up. Held. Gr. Dactylodus, l^ewberry & Wortlien, 1866, Geo. Sur. 111., vol. 2, p. 33. [Ety. daktylos, finger; odom, tooth.] Crown as in Petalodus; root conspicuous, and di- vided into a number of radicles. Type D. prin- ceps. concavus, St. John & f,o. , Woithen, 1876, Geo. canthus deula- Sur. HI., vol. 6, p. 390, tus. St. Louis Gr. excavatus, St. John & Worthen, 1875, Geo. Sur. 111., vol. 6, p. 392, Kaskas- kia Gr. inflexus, Newberry & Worthen, 1866, Geo. Sur. 111., vol. 2, p. 48, Kaskaskia Gr. lobatus, Newberry & Worlheii, 1866, Geo. Sur. 111., vol. 2, p. 47, St. Louis Gr. fc^,„ 1123. - Dnctylo- mmimus, St. John & dns concavus. von- Wortlien, 1875,Geo. vex face. Sur, III,, vol, 6, p, 391, St, Louis Gr. princeps, Newberry & Worthen, 18ti6, Geo, Sur, 111., vol. 2, p. 45, St. Louis Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Miller, S. A. (Samuel Almond), 1836-1897. Cincinnati : [s. n. ]
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
