Abstract
Three late Devonian ammonoid-bearing levels are described from the area of Cleveland, Ohio. These appear to represent the German Platyclymenia, Clymenia and Wocklumeria Stufen, clear evidence for which has been lacking previously in eastern North America. The lowest level, around the base of the Cleveland Shale, yieldsSporadoceras, Cyrtoclymenia, Platyclymeniaand a new species,Pleuroclymenia(?)ohioense. The middle level, near the top of the Cleveland Shale, bearsCymaclymenia, SporadocerasandPrionoceras. The highest level, just above the base of the Bedford Shale, hasPrionoceras quadripartitum. This species, and a fauna of the basal Bedford, have been located also in the area of Columbus, Ohio. AnEpiwocklumeria(?) sp. is recorded from Indiana. Attention is drawn to the international importance of the late Famennian and Lower Carboniferous ammonoid sequence which can now be recognized in Ohio.
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