9 years ago
T-rex and its ilk owed hunting success to special serrated teeth
Many extinct creatures, including killer theropod dinosaurs like the notorious Tyrannosaurus rex , had serrated teeth, with jagged cutting edges to help them chew through flesh. Some years ago scientists noticed that theropods also had some unusual structures inside their teeth: interconnected cracks and voids that many thought must have been wear and tear from the act of eating hard stuff, like bones.
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