. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. 395 Meris. (Meristella unisulcata, continued.) Villa. ". m HaJT^^m^ IS- fi. At,.Rh. «^sy-=-7>/ z near the beak, as shown in the figure, while there is a second fold on the side of the shell. Fig. 19 is a specimen from the Upper Helderberg limestone of the West; in which the fold is sharp and clearly defined, slightly oblique, and intermediate to the former two; the specimen is more gibbous than those from the limestone of New York. Figs. 20
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. 395 Meris. (Meristella unisulcata, continued.) Villa. ". m HaJT^^m^ IS- fi. At,.Rh. «^sy-=-7>/ z near the beak, as shown in the figure, while there is a second fold on the side of the shell. Fig. 19 is a specimen from the Upper Helderberg limestone of the West; in which the fold is sharp and clearly defined, slightly oblique, and intermediate to the former two; the specimen is more gibbous than those from the limestone of New York. Figs. 20 and 21 are ventral and dorsal views of a large specimen from the limestone of New York; fig. 22, profile of the same; fig. 23, front view of the same. Fig. 24, interior of the dorsal valve, showing a median septum, cardinal process, teeth, sockets, and bases of the crura. Fig. 25, interior of ventral valve, showing the teeth and muscular impression. (Figs. 24 and 25, * ^ ^ ^ from the limestone of the Falls of the Ohio.) Hall proposed for the Hamilton form M. unisulcata^ var. hiplicata; and the western form M, unisulcata^ var. u^niplicata.— VIII a^ c. Meristella ? found in the Oriskany shales (here the only representative of VII) south of Port Jervis, in New Jersey. G6, p. 123, on Pike and Monroe Cos., Pa.— VII. Meristella ? found by 0. E. Hall among Oarll's Che- mung collections in N. W. Pa.— 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
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectpaleontology, bookyea
