Interesting Fact: Evidence of tumors in the backbone
I feel sorry for G. mongoliensis, because the 'most interesting' factor I'm going to discuss for this species is the propensity for tumors to develop in their vertebrae! A CT scan study of hadrosaurid vertebrae by Rothschild et al. 2003 found that the two G. mongoliensis examined possessed hemangiomae (benign 'blood tumors'). Of the 97 hadrosaurs examined, 29 had tumors in their vertebrae; compare this to the 611 non-hadrosaurs examined, of which 0 had tumors! Overall, the authors concluded that "...the predilection of hadrosaurs to tumors is unprecedented and unique". So, G. mongoliensis, you and your hadrosaur compatriots are unique in your tumor-y-ness! Hooray, I guess? 

References:
Gilmore, C. W., 1933. On the dinosaurian fauna of the Iren Dabasu Formation. Bulletin of the         American Museum of Natural History. 68(2-3):23-78.
Prieto-Marquez, A. and Norell, M., 2010. Anatomy and Relationships of Gilmoreosaurus                     mongoliensis (Dinosauria: Hadrosauroidea) from the Late Cretaceous of Central Asia. American     Museum Novitates 3694; 1 - 49.
Rothschild, B. M., Tanke, D. H., Helbling, M., Martin, L. D., 2003. Epidemiologic study of tumors     in dinosaurs. Naturwissenschaften, 90:495–500.

Especially when your fossil site is located in the middle of a boggy clay pit. As you may be starting to guess, yes, my recent foray into the wilds of Isisford didn't go too well. We packed everything we needed: camping equipment, food, digging tools, maps etc… and then drove 1,200 km to Isisford. But alas, heavy rainfall in central QLD, and the rest of the country as it turns out, made off-road driving near impossible. And a field site 20 km from bitumenised road is definitely a no-go. We diligently waited for the rain to pass, and it would hold off for a day, but then be back the next. But at least I've seen what that part of the country looks like! I took the opportunity to walk along the Barcoo River, and imagined scenarios in which animal carcasses could be washed down river, decay and bury, much like the Isisford fauna may have 100 million years ago. Stay tuned for more field trip photos and stories, sadly sans fossils.