A family of large extinct hoofed mammals from the Eocene epoch that had horn-like protrusions on their heads.
From Greek 'dino-' (terrible) + 'kerat-' (horn) + Latin '-idae' (family suffix). The term was created in the 19th century to classify these prehistoric mammals based on their distinctive cranial features.
These creatures were walking contradiction machines—they had horn-like growths but weren't actually related to modern horned animals, showing how evolution sometimes creates similar solutions in completely different lineages.
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