Left: Illustration of Ottoia, a prehistoric priapulid, burrowing. Right: Ottoia worm.

Compiling a ‘dentist’s handbook’ for penis worms

06 May 2015

A new study of teeth belonging to a particularly phallic-looking creature has led to the compilation of a prehistoric ‘dentist’s handbook’ which may aid in the identification of previously unrecognised specimens from the Cambrian period, 500 million years ago.

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