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  • This illustration compares the headbutting of an extinct giraffoid called Discokeryx xiezhi (foreground) with the neck-fighting style of modern giraffes (background).
    WANG Yu and GUO Xiaocong
    Extinct headbutting relative reveals how the giraffe grew a long neck
  • Tooth size comparison between extinct Early Pliocene Otodus megalodon tooth and a modern great white shark.
    MPI for Evolutionary Anthropology
    Great whites may have doomed the biggest shark that ever lived, fossil teeth reveal
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