. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Perip. 624 Periplectrodus warreni. {Figures under P, compressus.) St. John & Worthen, Geo. Sur. 111., Vol. 6,1875, page 325, plate 8, iigs. 25 a^to G'j the last a mature specimen of this species of fish-tooth, showing at least seven transverse^ series of crown- cusps, with fine cutting edges, and ornamented on both faces, much as in Cladodus. A score of such have been found, of various ages, and a great variety in number of sets of cusps, showing that old
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Perip. 624 Periplectrodus warreni. {Figures under P, compressus.) St. John & Worthen, Geo. Sur. 111., Vol. 6,1875, page 325, plate 8, iigs. 25 a^to G'j the last a mature specimen of this species of fish-tooth, showing at least seven transverse^ series of crown- cusps, with fine cutting edges, and ornamented on both faces, much as in Cladodus. A score of such have been found, of various ages, and a great variety in number of sets of cusps, showing that old ones may have up to twelve. From the Il- linois Burlington (Suh-cari.) limestone, XL Pernopecten crenulatus. {Pecten crenulatus,) Hall, ^^*«^ Geology of the Fourth District of New York, ?⢠â JiiillL 1843, page 264, fig. 119,8. Chemung forma- tion, VIII Pernopecten glaber. {Limaglaher,) Hall, page 264, fig. 119,10. Chemung formation, 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 Lesley, J. P. (J. Peter), 1819-1903; Pennsylvania. Board of Commissioners for the Second Geological Survey. Harrisburg, Board of Commissioners for the Geological Survey
Size: 2064px × 1210px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectpaleontology, bookyea
