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File:Cladoselache and Eusthenopteron.jpg

Cladoselache was a small prehistoric shark from the Devonian period, and with well-preserved specimens found in the "Cleveland Shale" on the south shore of Lake Erie. It was a predator of smaller fishes and cephalopods and was about 6 feet (2 meters) long. Several species are known. Cladoselache probably lived around reefs and rocks. Along with Stethacanthus, it was one of the earliest sharks on our planet.

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