188 place 6

188 Ghost sharks grow teeth on their heads to mate

ScienceDaily
ScienceDaily · 09/05/2025 18:59 EDT

Ghost sharks have evolved rows of true teeth on a bizarre forehead rod used for mating. Fossil and genetic evidence revealed the tenaculum’s teeth develop the same way as those inside the mouth, offering a striking example of evolution’s ability to repurpose biological tools.

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