From llamas to horses, many herbivorous animals have hypsodont or continuously growing teeth designed to withstand heavy wear from abrasive diets. But without proper alignment, diet, and care, these ...

Casts of two key specimens: Paranthropus aethiopicus (left) and P. boisei (right) Credit: Zeresenay Alemseged A new study published this week in the journal Proceedings of the National Academy of ...