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Re: Patagonian Mesozoic Reptiles

Nick Gardner wrote:

Indeed. The authors don't give any support though for why they favor
an ornithopod position for heterodontosaurids (and consequently
_Pisanosaurus_ as well due to their inclusion of it  within the
heterodontosaurs).

The idea that _Pisanosaurus_ is a heterodontosaurid goes back at least as far as Bonaparte (1976). So it's an old idea. But subsequent studies have refuted it in spades.

Cheers

Tim

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