Taken together, I hope it's clear that I'm not certain that evidence shows that grass co-evolved with radiative mammalian evolution post k-t. I could be wrong,

Taken together, I hope it's clear that I'm not certain that evidence shows that grass co-evolved with radiative mammalian evolution post k-t. I could be wrong, but I'd like to have some references so I can be correct in the future, if that's the case. Are current and pre-holocene megafauna grass specific or generalist herbivores?