. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Neur. 458 The nerves branch and become parallel, and correspond with the threads of the fringe. Unlike all known species of Cyclopteris^ it has some affinity with Neuropteris crenulate^ Brgt. The discovery of this fern led Lesquereux to write: "Though we have many species of living ferns with fimbriate margins, it is the first time that a species of this form has been found in a petrified state and from the old formations. But every day the study of foss
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Neur. 458 The nerves branch and become parallel, and correspond with the threads of the fringe. Unlike all known species of Cyclopteris^ it has some affinity with Neuropteris crenulate^ Brgt. The discovery of this fern led Lesquereux to write: "Though we have many species of living ferns with fimbriate margins, it is the first time that a species of this form has been found in a petrified state and from the old formations. But every day the study of fossil remains shows us something new, and teaches us that the primitive organic structures of this world were much more perfect than is generally believed. Truly, each form of being was perfect from the first/' Later, this species was found in Mazon creek nodules, Illinois, (11^ 430 ; IV, 384, pi. 6, f. 4) ; abundantly in nodules in Hildreth's Ohio collections at Marietta; in the Kittanning coal bed at Oannelton, Beaver Co., Pa.; and in many other collections; but not in the sub conglomerate measures.—Coal Flora, page 81, plate 5, figs. 1 to 6. Cyolopteris ftmbriata^ Lesq. Jour. Boston S. N. H. Vol. 6; Geol. Pa. 1858, plate 4, figs. 17, 18. Not found in Subcon- glomerate coals; but abundant from the Conglomerate up to the Salem anthracite bed at Pottsville; Can- nelton, Pa.; Charleston, W. Va.; Mazon creek nodules. 111.; Marietta nodules, O., etc. Lesq.) Collett's Ind. 1882, p. 52, plate 10, fig. 2, Allegheny series, Coal Measures. XIIL Neuropteris fissa. Lesq. Geol. Pa. 1858, p. 857, pi. 3, fig. 2; only a broken leaflet from Pottsville Gate vein, split by pressure ? Like iV. ingens^ Lind.; but nerves thin and close. Allied to Cyclopteria orhicularis.—XIII. Anthra- cite coal measures.—Abun- dant in the Powelton shales, just over the Fulton - Cook coal (bed B) on Shoup's run, Broad Top, Huntingdon Co., Pa. Also, a few specimens seen in the Barnet (bed A) roof shale at the Ree
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