Just to digress a little bit here.
I remembered us bringing up T Rex a lot in some of the past pages on here. So I went just doing some basic browsing on everyone's favorite Terrible Lizard. Now this is just some basic background, nothing too fancy. Plus keep in mind this is based off wikipedia, and remember wikipedia isn't canonized, merely using this to find assertions and basic facts which can be back-tracked and cross-referenced.
Here's a basic article about everything wikipedia is aware of T Rex:
Tyrannosaurus - Wikipedia, the free encyclopedia
Now one of the first things I noticed that made me laugh was it seems T Rex has had something of an indentity problem in the past and until revised way later, much of the known T Rex skeletons were indentified with less popular dinosaurs. Another thing you'll notice with really any dinosaur, not just T Rex, is that all their skeletons are incomplete thus any rendering of what they're supposed to look like is naturally flawed and figment of the imagination of artists.
So this made me wonder last night; what can we tell from the most complete T Rex skeleton?
Here is the most complete T Rex known about in the modern world:
http://en.wikipedia.org/wiki/Sue_(dinosaur)
Particularly draw your attention to the Discovery of Sue the T-Rex. This quote I really liked and really was awesome in my opinion:
"The group was excited, as it was evident that much of the dinosaur had been preserved. Previously discovered
T. rex skeletons were usually missing over half of their bones.[SUP]
[9][/SUP] It was later ascertained that Sue was a record 80 percent complete.[SUP]
[9][/SUP] Scientists believe that this specimen was covered by water and mud soon after its death which prevented other animals from carrying away the bones.[SUP]
[2][/SUP] Additionally, the rushing water mixed the skeleton together. When the fossil was found, the hip bones were above the skull, and the leg bones were intertwined with the ribs." ---Wikipedia Sue the T Rex.
Seems to me the regardless of whether you believe in an Old Earth or a Young Earth that one fine day in South Dakota Sue the Dragon got wiped out fairly quickly by a lot of water in a catastrophic fashion. Had to have been quite sudden too to be able to bury the fell beast so quickly as well as re-arrange its skeleton lol.
Also if keep reading the Sue the T Rex article on wikipedia you'll see assertions that Sue may have had a multitude of diseases as well as scrapped with other dragons in some brawls. Seems to me to be supporting evidence that the Earth in the last days of this dragon was filled with violence until a Great Flood washed the grime away.