This is my make of the T-Rex Skeleton. It's a magnificent model that prints very well. I did have some issues printing some of the thinner tail sections and the ribs.
I did use rafts and supports for the Ribs, which were the hardest parts to print. I used rafts on the tail bones. Many of the parts, however did not require rafts or supports.
You will need to super glue the spine together. I did not glue the upper spine and over time the PLA flexed and failed. Super glue fixed it right up.
Bones: Hatchbox Glow in the Dark
Base: 3D Soluttech Peach (a.k.a. Tan)
I don't recall the specific printer settings, but it was basic stuff and it came out great.