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RE: Early mammals ate dinosaurs

There are other examples of predatory behaviour in the fossil record, but
only one example of the situation described earlier in the thread of a
victim escaping with injuries AFAIK.

There is the Dienonychus & Tenontosaurus assemblage, but there is no
evidence that the raptors actually killed the Tenontosaurus.  It seems to me
that it must have been a very large pack to withstand that sort of mortality
rate every time it hunted!

There is also the bitten hadrosaur tail (I am surprised Ken did not mention
this when he posted).  It would appear that the only therapod with
unambiguous evidence for hunting is the one some people consider was an
obligatory scavenger!