. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Alet. 12. Zt'^gJSSS Alethopterisnervosa. {) Les- qiiereux, Geol. Pa., 1858, plate 18, fig. 3, Za. He does not rede- scribe or refigure itin Coal Flora, P, 1880, but alludes to it on p. 199, under Pseudope- coptevis suhner- vosa.âNote that JUlhoi'trns nervosa. PIâ /d . AUthoptevis UCT- nervosa is the European species. See Gceppart's Syst. Fil. Foss., p. 212.âXIII, Abundant in the Anthracite measures at Pottsville, Shamokin, &c., but
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Alet. 12. Zt'^gJSSS Alethopterisnervosa. {) Les- qiiereux, Geol. Pa., 1858, plate 18, fig. 3, Za. He does not rede- scribe or refigure itin Coal Flora, P, 1880, but alludes to it on p. 199, under Pseudope- coptevis suhner- vosa.âNote that JUlhoi'trns nervosa. PIâ /d . AUthoptevis UCT- nervosa is the European species. See Gceppart's Syst. Fil. Foss., p. 212.âXIII, Abundant in the Anthracite measures at Pottsville, Shamokin, &c., but is very variable; "⢠sometimes the leaflets large and acute; sometimes near the top of the fronds the pinnae are only pinnately lobed, with round, short, entire lobes, oval, obtuse or slightly ; But it is all one species, for Lesquereux found all the varieties together in one specimen, proving it to be Brogniart's species. Alethopteris ohsciira. See Callipteridium rugosum, XIII. Alethopteris obscura, Lesq. So called because of the diffi- ' X I// , v# ^5 y^; /-^^ X: c u 11V o f making out any second- ary nerves. Geology of Pennsylva- nia, 18 5 8, Vol. 2, p. 865, plate 1, figs. 3, 3a.â 7- v^^^^iPNB^^- / XIII An- ^^'Hy ^^^^ /S5Z:L thr-acite Coal Measures, Gate Vein, Pottsville. Note. Unique speci- men, and only the upper part of a frond.âSee Callipteridium 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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