Stratodus
Encyclopedia
Stratodus is a genus of prehistoric fish
Fish
Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

. This sleek fish has an upper jaw filled with multiple layers of tiny teeth.
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