Small plastic dino bones, skulls, skeletons etc

I want to make dino digs (by encasing dino bones or skeletons in a plaster-like mix) for a group of kids to dig up, and need a source for a reasonably priced bag or tub of rather small (e.g. 2-4") dino skulls, dino bones (separate) or complete dino skeletons or shark teeth etc.-- can be all one species or mixed. Failing dinos, it can be any prehistoric animal’s, and failing that, it can be any animal’s. In toy stores I’ve only seen larger skeletons or “skin-on” colored dinos. Any leads or ideas?

the closest thing I am able to find online

pcstore.com.tw/homapontoys/M08690043.htm

Maybe the gift shop at one of the science museums or the zoo? Just a guess.

Thanks to both! Yes, I’ve checked both, as I’m a frequent visitor (and member). The Science Edu. Center has pricey and high-Q dinos (like $390 each), and individual pre-made dino digs for about the same price, but no cheap bulk skeletons. The zoo had, as of 2 years ago, six-packs of skeletons, but they aren’t small (shop by reptile house). I believe I’ll change plans and make my own skeletons using cookie dough, and then the kids can not only excavate them, but eat them! Should be easier than trying to source them. Thanks again!