Large duck-billed dinosaur, 40 to 50 feet in length
These dinosaurs are members of the hadrosaurid family, sometimes called "duck-billed" dinosaurs. They are large animals, being 40 to 50 feet in length, and are able to go on four feet or two. Edmontosaurs are plant eaters who prefer swamp-lands and floodplains. They are shy creatures, prone to fleeing if possible; their only effective attack is to lash out with their long, heavy tails.
Basic Fantasy Field Guide Omnibus
Cretaceous herbivore, formerly "anatosaurus"
Herbivores who foraged on all fours and ran on hind legs, there are two main families of the duck-billed dinosaurs known as hadrosaurids: hadrosaurines and lambeosaurines. In game terms there is no difference. Some could be interpreted as Semi-amphibious swamp or wetland dwellers, in which case they should have a swimming move, but many, perhaps all, are fully terrestrial. Trachodon and Anatosaurs are now-superseded names for kinds of hadrosaurid.
OSRIC