. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. !â â i' i, â i 'ii ii 298 THE CARBONIFEROUS SYSTEM. " P. cora, Dc Koninck, *Mon. du Genre Produdus,^ pi. 4, fig. 1,1847. " P. piteiformis, M'Chesncy,' Dcscr. of New Species of Fossils from the Palajozoic Rocks of the Western States of America,' p. 40, 1849. *'P. Lyclli, Dawson, 'Acadian Geology,' p. 219, fig. 9, 1835. " P. Cora, Dav.,' Mon. C
. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. !â â i' i, â i 'ii ii 298 THE CARBONIFEROUS SYSTEM. " P. cora, Dc Koninck, *Mon. du Genre Produdus,^ pi. 4, fig. 1,1847. " P. piteiformis, M'Chesncy,' Dcscr. of New Species of Fossils from the Palajozoic Rocks of the Western States of America,' p. 40, 1849. *'P. Lyclli, Dawson, 'Acadian Geology,' p. 219, fig. 9, 1835. " P. Cora, Dav.,' Mon. Carb. Brach.,' pi. 3G. fig. 4, pi. 42, fig. 9,1861. " After a very careful examination of nine or ten specimens of P. LyelU from the Low r Carboniferous limestone of Nova Scotia, I have reluctantly been i bliged to place M. de Vemcuil's species among the synonymes of P. cora, the latter name (as may be seen by the list of synonymes above given) claiming three years' priority. All the Nova-Scotian specimens I have been able to examine were small, not exceeding about 11 lines in length by some 12 or 13 in width. But it must be remembered that, as a general rule, the Nova-Scotian species and specimens, although adult, are small, and in this respect are exactly similar to those we find in Scotland. The surface is covered Avith numerous longitudinal, straight, or slightly flcxuous, narrow, thread-like, rounded stria;, with sulci, or interspaces, of rather less width; smaller stria; arc also here and there intercalated between the lai'ger ones. The ribs are also regularly and closely crossed by small concentric lines. "P. cora is a widely spread Carboniferous species, having been found in many parts of America, India, Europe, etc. " Sir C. Lyell found this shell at Windsor, Ilorton Bluff, Shubena- cadie, Gay's River, Minudie, and Cape Breton, in Nova Scotia. Dr Dawson states that it occurs almost everywhereâat Pugwash, on the eastern coast of Cumberland, at Le
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