. Geological magazine. on composing this part of thegeological column in Northern Ohio is as follows:— Lowest Coal. Berea Shale. Conglomerate. Bedford Shale. Cuyahoga Shale. Cleveland Shale. Berea Grit. Erie Shale. In this series the line separating the Carboniferous proper and theLower Carboniferous is drawn by Dr. Newberry, ex-State Geologist,between the Conglomerate and the Cuyahoga Shale, and that separat-ing the Lower Carboniferous and Devonian is placed between theErie and Cleveland Shales, The evidence from the contained fossilsis given in full below. Fossils of Lower Cakboniferous Eock
. Geological magazine. on composing this part of thegeological column in Northern Ohio is as follows:— Lowest Coal. Berea Shale. Conglomerate. Bedford Shale. Cuyahoga Shale. Cleveland Shale. Berea Grit. Erie Shale. In this series the line separating the Carboniferous proper and theLower Carboniferous is drawn by Dr. Newberry, ex-State Geologist,between the Conglomerate and the Cuyahoga Shale, and that separat-ing the Lower Carboniferous and Devonian is placed between theErie and Cleveland Shales, The evidence from the contained fossilsis given in full below. Fossils of Lower Cakboniferous Eocks of N. Ohio. Cuyahoga Shale .... Ctenacanthus formosus, Grit .... Ctenacanthus formosus, l^evih. Annularia longifolia, ShaleBedford Shale .... Ctenacanthus formosus, Newb. Orthis Michelini, LEveille. Streptorhynchus crenistriatwm, Phil. Chonetes Logani, Mor. and Pratt. Mhynchonella Sagerana, Win. Spiriferina soUdirostris, White. Syringothyris typus, Win. Geo! Ma^. Decade I. 4^ E .CWoodwari dd. et hik. West, C9 ijiijp, Ardaseastacus Willeyn_cesii, S-pence crassickelis , H. Woodw. 1866.) , LywheR&g-LS J Dorset. C, Spence Bate—On Archceastacus in the Lias. 307 Clevelastd Shale .... Ctenacanthusformosus,Ne^b. ,, furcicarinatus, Newb. Cladodus Patersoni, Newb. Orodus variabilis, Newb. Folyrhizodus modestus, Newb. Falmoniscus, 2 Shale .... Leiorhi/nchns mesocostale, Hall. Spirifera disjuncta, Sby. In regard to tlie fish quoted above from the Cleveland shale, DrNewberry remarks (Pal. of Ohio, vol. ii. p. 94) :— ? To the palaeontologist it is scarcely necessary to say tliat sucha group of fossils as that enumerated above could only come fromCarboniferous rocks, most of the genera here represented beingexclusively confined to that formation. The only exception isCtenacanthus, of which one or two doubtful species have beendescribed from the Devonian rocks of the Old World, and we haveobtained
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