Available instore at Toys R Us.
These stamps are of the same high-quality I've come to expect from Melissa & Doug. If you're after dinosaur stamps, you won't go wrong with these. The only complaint is the lack of a lid for the box. I really don't know why that wasn't included - it seems such an obvious addition.
The only other question is to how often these stamps would be used by a child? Crayons, for example, I can see being used all the time - they are loads of things you can do with them (well, loads of things you can draw & colour). But stamps? I can only seeing them come out to play once in a while before being packed away again.
Other Toyology reviews can by found in the Toys R Us Toy Box on Facebook.