The 3D printing files are made available here as STL files that have fixed meshes for printing. We have not provided the texture files but we can do this on a case by case basis so feel free to contact us with your needs. We have not tried to print each of these models and so there may be some problems which we shall work to fix. We continue to upload additional models weekly. If you can give us your feedback and make recommendations on this forum we would be grateful.
The STL files are provided are full size models. The STL files are not printer-specific. The dimensions of the fossil are provided on the viewer page as x y z in millimeters as if it were contained within a cube. You will need to scale the model as per your needs.
For useful tips on 3D printing, there are many places online to turn to for help and support. Here are a few links that may be a start.
Feel free to ask questions here for other users to make suggestions to solve your printing issues.