by mz4250
Given how massive the ancient and adult are, laid on a print bed, I highly recommend printing this fella in pieces. For an adult size, you should scale each piece down to 75%. For a young size, scale down to 50%.
Want to access even more models not found here in Thingiverse? Interested in supporting my efforts making free models for the world to enjoy? Check out my patreon page here: https://www.patreon.com/mz4250
Patrons have access to all my files in one place, a request board, as well as commercial and commission options! Come check it out :-)