. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. yNovlhrt, 1838. New. & W. Geo. Sur. 111., Vol. 2, 1866, page 107, plate 11, figs. 1, la, 15, natural size^ surface, side and end, of a fish tooth (undistinguishable from^those described by Agassiz, in Poissons fossils, Vol. 3, p. 112; Atlas , plate 13),found at Chester, 111., in the Chester limestone, XI. Psammodus reticulatus, Newberry and Worthen, Geo. Sur. 111., Vol. 2,1866, page 109, plate 11,figsS and 5«, natural size,, upper sur- face an
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. yNovlhrt, 1838. New. & W. Geo. Sur. 111., Vol. 2, 1866, page 107, plate 11, figs. 1, la, 15, natural size^ surface, side and end, of a fish tooth (undistinguishable from^those described by Agassiz, in Poissons fossils, Vol. 3, p. 112; Atlas , plate 13),found at Chester, 111., in the Chester limestone, XI. Psammodus reticulatus, Newberry and Worthen, Geo. Sur. 111., Vol. 2,1866, page 109, plate 11,figsS and 5«, natural size,, upper sur- face and cross section of a fish tooth, wrinkled cross- wise, like jP. Tugosus of Agassiz. (See also Vol. 7, 1883, page 224, plate 19, figs. 3a, to 5c.) Chester, 111. Chester limestone, XT. Psammodus rhom-boidens, Newberry and Worthen, Geo. V >. Survey of 111., Vol. 2. 18S6, page 110, plate 11, figs, 6^ 6a, the up- per surface Geol, SlLVolXPU-f. ^"^ «i<i« «f fish-tooth, from the Keokuk limestone of Illinois. XI,—S. A. Miller says in his latest edition of N. A. Geol. & Pal. 1889, that this is a pynonym for Sandalodus Icevissimus, Psammodus rugosus, Agassiz. Kecherches Poiss. Foss. 1838, New. & W., Geo. Sur. 111., Vol. 2,1866, page 108, plate 11, figs. 3, 3 a, natural size^ upper surface and side view of a small tooth, doubtfully separated from P. porosus,, because the surface is coarser and rougher, and because they occur in two forma- tions which have few species in common. McCoy regarded Agassiz's two species (porosus and rugosus) as mere varieties. Alton, 111. St. Louis limestone, XI,. 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 Geologi
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