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Colorado "centrosaurine"

     My previous post asked about the reported "Centrosaurus" from western 
     Colorado.  Thanks to Harley Armstrong, he reported to me that, after 
     he examined it with Ken Carpenter and Jack Horner, they agreed "it was 
     actually hadrosaur material from the Williams Fork Fm" (Mesaverde 
     Group).  Well, I guess we don't have to worry about that occurrence in 
     understanding centrosaurine biogeography!
     Brian Witzke