. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Prod. 752 Strophomena lima^ Jour. Ac. Nat. Sci. Phil. Vol. 8. p. 256; as- sociated with P, lachrymosa^ and passing into it by variations of form; approaches P. hoydii^ by being distinctly depressed in the middle, the dorsal valves being correspondingly elevated, leaving a depression in interior casts, which are often the only remains to be found in the rock; but differs in the ventral valve being more gibbous, in a depression broader and shallower, and in the


. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Prod. 752 Strophomena lima^ Jour. Ac. Nat. Sci. Phil. Vol. 8. p. 256; as- sociated with P, lachrymosa^ and passing into it by variations of form; approaches P. hoydii^ by being distinctly depressed in the middle, the dorsal valves being correspondingly elevated, leaving a depression in interior casts, which are often the only remains to be found in the rock; but differs in the ventral valve being more gibbous, in a depression broader and shallower, and in the characteristics spiniferous tubercles. Various places in western New York. (Hall.)—Chemimy. VIII g. Productella onusta, Hall. P^l. N. Y., Vol. 4, 1867, page. 184, plate 26, figs. 29 to 42, from which I select a number.— Cht" —In Erie Co. Pa., collected b}'' I. C. White atLe Boeuff's quarry, one mile from Le BoeufF RR. station, Spec. 869-17 I (cast.) from Panama conglomerate. Also at Warren, Spec. 9485 of Randall's collection, from Upper Chemung. VIII g. —Hall says this shell is very symmetrical and the largest among the species of this subgenus, readily distinguished from. 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