RE: If an Asteroid wiped out the Dinosaurs how did Evolution continue?
July 9, 2013 at 6:33 pm
(This post was last modified: July 9, 2013 at 6:55 pm by The Grand Nudger.)
No, the case is more aptly we have no reason to assume that grass was abundant before 55mya because evidence is exceedingly sparse ( a single find.......), whereas after 55mya we have the evidence to show that it was very abundant. Simultaneously, as we go about sequencing grass (mostly for ag purposes, mind you, we likey da cereals) we get an estimate of 55-70mya for an lca (that accounts for 90% of existent species). While it's feasible that the family diverged pre kt - only just, and still wouldn't become prominent until about 10mil years afterwards so far as we can tell. I don't have any dogs in the dino race personally, whether or not any particular member of ceratopsia was a grazer would be awesome to know, but there has to be grass there (or it's lca) - in abundance - before we could call anything a grazer on said grass, eh? As far as the big kt winners, grass qualifies either way, in my opinion. Right alongside we humble mammals
(and I think it's fitting that we've stayed so close since..lol)
(and I think it's fitting that we've stayed so close since..lol)
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