THURSDAY, 21 APRIL 2011
![From: http://commons.wikimedia.org/wiki/File:Labidosaurus_hamatus.jpg](https://bluesci.co.uk/wp-content/uploads/2011/04/reptile1-300x92.jpg)
Whilst enhancing eating efficiency, the new development meant that bacteria living on the teeth were no longer frequently removed, leading to long-term infections and eventual tooth decay and loss. 275 million years later, this susceptibility is seen in humans and is the major cause of cavities [1].
Written by Sarah Gardner