If you're looking for inexpensive dinosaur models for your tabletop gaming, check out Dollar Tree.
The Jurassic Park line of toys are now in the toy department while supplies last.
These are toys made from a rubbery material, costing $1.25 USD each. I picked up the Ankylosaurus, but I know they also have a Stegosaurus and some bird-like dinos.
The colors are a bit pastel, the dinos come attached to large rocks, and as you can see above, the Ankylosaurus has a prominent seam where the tail was attached.
The size comparison picture with a 32mm figures gives a sense of how large the toys are. According to Wikipedia, "Ankylosaurus is estimated to have been between 6 and 8 meters (20 and 26 ft) long." I figure that means this model would be an adult in 15mm, and a baby dino in 32mm. I would guess the other dino models vary in scale (i.e., whatever fits the packaging).
Note that the model seems to be glued to the stand – it does not pull off! But since everything is soft plastic, you could patiently snip the base away if you don't want it.