Fossilised ichthyosaurus sp. dating 200 million years ago from Hettangian age of the Jurassic Period. Millimetric ribs and vertebrae of embryo inside the rib cage of the sea (large rib at the bottom of the image). Shells accumulated between the bones may be the trace of the scavenger behaviour of bivalves. Collection Jean-Philippe et Francois-Xavier Blouet, paleontologists.