The fossilised and squashed remains of a fish-like creature from the Yale Peabody museum. It follows a pattern of such fossils with a few dislocated vertebra revealing the other sections of the spine. The alternate flip and flop of the ribs and the various views of the vertebra provide a slightly cubist view. Like a low relief sculpture, it sits somewhere between two and a fully three dimensional existence.
The thing is so flat that the stereoscopy hardly registers. As with the dioramas, though, the three dimensional registration is quite revealing.