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Anvilhead Shark — Stethacanthus
Speaking of sharks, there’s another weirdo you have probably never heard of — Stethacantus. Most of the representatives of this fishy family look very similar to each other, even when you compare today’s species with the extinct ones. But there were a few notable outliers that just don’t feel real. The Stethacantus had a dorsal fin shaped like an anvil.
