There have been a number of great LEGO creations built for the Iron Forge challenge recently. The seed part, or the element that each entry needs to use is the Minifig torso, sans arms, and PaulvilleMOCs makes masterful use of white torsos (one in each fossil).
While the ones on the T-rex and the Triceratops are obviously used for the skulls, trading shoulder sockets for eye sockets, you have to look more closely at the Pterosaur, to find it sprouting wings.
