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Armadillo ancestor’s spiked tail had a ‘sweet spot’

New research shows that the ancient armadillo ancestor, the gylptodont, used a ‘sweet spot’ on it’s spiked tail to hit rivals.

Dr Blanco and colleagues were inspired by previous studies on baseball bats to calculate the position of the “sweet spot” – or “centre of percussion” – of the tail club of several species of glyptodonts.

He said: “We found in several of the large species the centre of percussion was almost at the same position of the largest spike in the tail.

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