To ensure realistic CG animation, 3D workbooks were created using Softimage 3D software. 48 animators worked on the film, using 300 computer processors to animate the film. Having aspired to be a paleontologist, David Krentz supervised the character design and visual development teams. He had an orthographic view of the dinosaurs, and his character designs were drawn on paper and scanned into the PowerAnimator software for the modelers to rig in the computers. In the character animation department, the dinosaur characters were first visualized in the computer in skeletal form. The rough character animations were then transferred into three software programs to strengthen the visuals of the characters. The programs were "Fur Tool," which was used for the lemurs and to create feathers and grass; "Body Builder," which was used to create skin and muscles for the dinosaurs; and "Mug Shot," a shape blender that works within Alias Maya for facial animation and lip-synching.