Mudbox includes a variety of pre-made 3D polygonal mesh sculpting templates you can use as the basis for your sculpted models. These simple pre-made polygonal meshes have UV texture coordinates (which are required for texture painting and texture extraction). Pre-made mesh templates include some basic 3D shapes (cube, plane, sphere) and several other organic forms.
The object appears in the 3D View at the center of the 3D View (origin).