. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. 625 Petal tooth, of this powerful fish first found in the Coal measure limestones of Pennsylvania. The Crwoidal limestone of the Barren measures {Pittshurgh series) is so full of sharks' teeth in Ohio as to deserve the name of a '' fish ; Most of them are small, the species are of Petalodus^ Cladodus, and Ctenop- tyohius. The largest and most abundant is this P. alleg- haninsis^ which St. John considers to be the same as P, de- structor of Illinois,
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. 625 Petal tooth, of this powerful fish first found in the Coal measure limestones of Pennsylvania. The Crwoidal limestone of the Barren measures {Pittshurgh series) is so full of sharks' teeth in Ohio as to deserve the name of a '' fish ; Most of them are small, the species are of Petalodus^ Cladodus, and Ctenop- tyohius. The largest and most abundant is this P. alleg- haninsis^ which St. John considers to be the same as P, de- structor of Illinois, but Newberry does not, because of its being always smaller, and having a longer and narrower fang, while the destructor fang is broad, flat and pointed.âXIV. Petalodus curtus, Newberry & Worthen. Geo. Sur. Illin- ois, Vol. 2, 1866, page ''^ 394, plate 12, fig. 12 a, ^â ^ convex lace of medium- sized tooth; crest worn nearly plane, with con- vex basal margin; 12 &, concave face, showing corrugated ornamentation; 12 <?, pro- file section. Keolcuk limestone^ Bentonsport, Iowa. XL Petalodus destructor. Newberry & Worthen. Geo. Illi-. Qe9lMij$uy9L 6, j>£cJt^ ,2,. 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
