Drawing by Mike Milborne. Click to enlarge
Today analysis of the photograph of the vertbebrae in the Washington Post article by Tom Holtz and Mike Milborne has lead to restorations of the dinosaur. Mike thinks it is a dromeosaur (raptor) and that it may have been larger than Utahraptor. This is based on his view that the bone is the 13th, 14th or 15th Caudal (tail bone). He estimates its size at 15-20 feet long and perhaps 1,000 lbs. However, if the vertebra was closer to the end of the tail, the raptor could be much larger. Tom Holtz thinks it may be a large raptor as well or perhaps something like Deltadromeus.
Mike Milborne has made a sculptured vertebra based on the existing photograph.
The bone has yet to be located despite continuing efforts by Peter Kranz. Any information on where the vertebra may be today would be greatly appreciated.