Stethacanthus has unique dorsal fin shaped like an anvil or ironing board, which set it apart from other ancient sharks.
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Fossil of stethacanthus.
Male stethacanthus had a brush-like structure on the top of their heads.
Stethacanthus had a unique dorsal fin.
Illustration of Stethacantus in a white background.
Diorama of fossil of the stethacanthus.
Most fossils are found in Europe and North America.
Stethacanthus prowled the depths in search of its next meal.
Stethacanthus is a distant relative of modern sharks.
Reconstruction of two species of Stethacanthus.
Stethacanthus was relatively small shark.
This prehistoric shark showing its anvil-shaped dorsal fin.
Fossil of stethacanthus.
Illustration of Stethacanthus and fish species underwater.
Stethacanthus, from a random book about prehistoric animals.
The anatomy of Stethacanthus suggests it was a nimble predator.
