X-rays add new twist to narwhal's spiral tusk
A new study published in Nature Communications reveals that narwhal tusks contain two internal spirals twisting in opposite directions, rather than just one. This discovery provides new biological insight into the structure of these unique canine teeth.
Why it matters
Understanding the complex anatomy of narwhal tusks helps scientists better comprehend evolutionary biology and the specific adaptations of marine mammals.
a question of chirality X-rays add new twist to narwhal’s spiral tusk New study finds that the tusks have not one but two spirals, twisting in opposite directions.
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