
EDIT: Whoops I hit post instead of preview.
So, I just mostly wanted to focus on the attachment of the legs to the body and their desired movement.
You'll notice it's not polished and the end of the tail and head could use more of a dampened sine wave motion (and it's only four frames because I got lazy).
I noticed this was a gryposaurus by your filename, so I
googled me a dinosaur to see what they look like and guess how they walked.
I image searched for the skeleton as well to tell how they were built up, and I came to the conclusion they once walked on hindlegs and then moved back to walking on all fours, which makes it REALLY easy to guess how they'd walk, because all you have to do is run around on the floor yourself on all fours. Done.
I also looked at how horses and ostriches walk, because they both seems to have similarities.
Ask me if you think this is useful and want any more information.
DOUBLE EDIT:
I added a second version, this time with some damped wave effect on the tail and slightly different weight distribution so that he can keep his head still.