“Insane” – Bizarre Fish Discovery Flips Long-Standing Assumption in Evolutionary Biology

Male spotted ratfish have true teeth on a forehead appendage used for mating. Across vertebrates, teeth share many defining traits. Regardless of their shape, size, or sharpness, they stem from the same genetic origins, display similar physical features, and are typically found within the jaw. Recent discoveries challenge this long-standing assumption. Spotted ratfish, a shark-like […]



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