Was the diversity of feeding styles in giant turtles a key to their suckcess?

This was originally posted at: http://blogs.egu.eu/palaeoblog/?p=883

­Sometimes, it can be difficult to figure out how ancient organisms used to eat. Part of the problem is that we can never actually see extinct animals eating (until we invent time-travel.. *taps fingers impatiently at physicists*), and often it can be hard to work out how something ate based just on its anatomy.  Sometimes though, the fossil record chucks up something truly spectacular, and gives us amazing insight into the spectacular diversity of ancient life.

Let’s roll it back a bit.

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