No information on where these guys came from. I scooped 'em up from a local antique store, but there's no imprint on them.
I look for cool paleo-related stuff whenever I'm in an antique store, but it's really hard to come by, beyond the occasional Sinclair sign, or children's books, which are almost always way over-priced (the thrift stores are where it's at for books). The only other dinosaur salt and pepper shakers I've been able to find on-line are here. This is, in my opinion, one of the most grievous oversights in the history of kitchenware. Disgraceful.
UPDATED: Julia, of the wonderful, thoroughly worthwhile blog The Ethical Palaeontologist, has clued me in that these dudes may not technically be vintage at all! Check out the comments below to see some shots of a suspiciously similar money box she purchased at Wall Drug, SD. Thank you, Julia. And thanks to Brian at Dinosaur Tracking for the hat tip.