Lazarus dinosaur original refs

[Rich Grenyer <r.grenyer@ic.ac.uk>]

My apologies if this has already been covered, but I've lost my 
dinosaur-L archives $:o...

Can anyone supply the original references for the putative Palaeocene 
hadrosaur faunas of the San Juan basin? In particular, does anyone 
know which the "recent studies" were that were referred to in 
J.Fassett's abstract? Should get up to speed on this really, if it's 
as big as it might be.

Many thanks,

Rich