Prehistoric Fauna is a Minecraft mod dedicated to the time travel, exploration, and progression of dimensions that represent the past, with multiple formations and multiple animals in each formation, with multiple eras for traveling.
For both Ischigualastia and Saurosuchus, both of the creatures original designs before the release designs were created by me with some assistance from other Developers of the mod. After the texture maps were created, both were revised and improved by some of the team members, such as Weastian. Ischigualastia was more-so revised, while Saurosuchus had some touchups.
The Tyrannosaurus rex skeleton was another original creation that eventually undergone some touchups after I made it, and before release. The skull texture isn't my specific creation, but the rest of the Skeleton was, and as with the other two assets, with some minor feedback and assistance, with post-production touchups by other developers in the team.
Note- I don't take 100% credit over these assets.