Never thought I would say this, some of those cheap plastic monsters are great for one off games, or for making special theme games for an evening.
Justifying spending $100+ on real miniatures dinosaurs is just to much for my wallet, when the idea is running the Lost Walley Black Dossier once or twice!
I somehow even think that the plastic toy animals, will just add mood for the cheesy setup of elephant-gun armed dinosaur hunters, doing some pulp action!
Btw Copplestone Castings have some excellent cavemen!