Colorado centrosaurine

[bwitzke@gsbth-po.igsb.uiowa.edu]

     Darren Tanke's query (Digest 163) about the apparent absence of any 
     bona fide Centrosaurus outside of Alberta raised some interesting 
     thoughts about Campanian dinosaur biogeography.
     
     This also brought to mind a report of a "Centrosaurus" skeleton from 
     near Rangely, Colorado (noted by R.G. Young and H.R. Bollan, in 
     Averett, W.R., ed., 1991, Guidebook for dinosaur quarries and 
     tracksites, western Colorado and eastern Utah: Grand Junction 
     Geological Society, p. 47-48).  The material is not illustrated or 
     discussed, and I suspect that the specimen may not necessarily be a 
     true Centrosaurus (probably better relegated to centrosaurine indet., 
     possibly Monoclonius?).
     
     Nevertheless, the presence of a centrosaurine in Colorado is certainly 
     of note.  Does anyone out there have further information on this 
     Colorado occurrence?
     
     Brian Witzke