Piatnitzkysaurus is actually a somewhat well known dinosaur. It has been made into a working model in Spore and featured in Dinosaur King multiple times. The appearances are in the card game rather than the television show, but numerous cards have been created for the series of games. The information page maintained by fans notes that the dinosaur has always been shown as possessing four fingers while the known skeletons possess only three digits. The ultimate in so-so reconstruction is actually a dinosaur postage stamp sheet from the Maldives. It does show Piatnitzkysaurus fishing though, which is interesting.