The First Toothache

Why don't sharks need dentists? Believe it or not this isn't the set up of a rather surrealist joke but instead it's an interesting biological question. Sharks continuously loose their teeth throughout their life time and can have up to 30,000 teeth over that period. That's over 900 times as many as you or I... Continue Reading →

Tuberculosis in the Triassic

Very few infectious diseases leave their traces on your bones. This is a problem for palaeontologists because only bones tend to get fossilised, and soft tissues are vanishing rare in the geological record. Even when these are preserved they're extremely unlikely to reveal signs of any infection the animal might have suffered. Therefore very few... Continue Reading →

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