. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. 897 Khynchonella pisum (pisa)^ Hall & Whitfield, Pal. Ohio, Vol. 2,1875, page 135, plate 7, fig. 18, 19, dorsal and profile views of a well formed ventricose specimen; 20, dorsal, shorter form, with depressed convex valves; 21, long, venticose form, unusually angular plications; 22, flat valved, young? speci- men. Resembles B. neglecta in the same beds, but valves more convex and folds not so sharp. The more ventricose specimens resemble small R, n
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. 897 Khynchonella pisum (pisa)^ Hall & Whitfield, Pal. Ohio, Vol. 2,1875, page 135, plate 7, fig. 18, 19, dorsal and profile views of a well formed ventricose specimen; 20, dorsal, shorter form, with depressed convex valves; 21, long, venticose form, unusually angular plications; 22, flat valved, young? speci- men. Resembles B. neglecta in the same beds, but valves more convex and folds not so sharp. The more ventricose specimens resemble small R, nucleolata^ but are longer, beak projects more, plications are never flattened and have not the groove. Highland Co., O. Niagara^ Vb. Rhynchonella plena. {Atrypa plena^ Hall, Pal. N. Y- Vol. 1, Chazy). Emmons, A. G. I, ii, 191, pi. 3, f. 28,a, J,c,rf,beaks ^^'^^ small and close r/jpressed together; 15 to 20, plain, undivided folds, four or five in the hollow. Calciferous sandstone (upper beds); common in Chazy limestone. Logan's Geology of Canada, 1863, page 126, fig. 50 a ventral, c dorsal valve. IIa^ III, Rhynchonella plicatella {Atrypa 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
