Just found this thought everyone might be interested.
mobile.theverge.com/2013/8/30/4671828/3d-print-your-own-fossils-new-online-database
Can't get the link working on my phone so you'll have to copy and paste. Sorry
this is cool, but after browsing the database, I could not really find anything worth printing. A few trilobite fossils looked decent, but not interesting enough to clean up and print...
I haven't had time to have a proper look. But by the sounds of things I think it's still early days and the database is going to be updated. I'll have a proper look later and see if I can find some good stuff and will report back