Castor canadensis, beaver brain endocast Pachycephalosaurus Family Rhinocerotidae

Family Rhinocerotidae

Erdmann in 1998 and deposited at the Indonesian Institute of Sciences (LIPI)

Rhaeboceras halli

forming a basket

Discovered in 1994

Castor canadensis, beaver brain endocast Pachycephalosaurus Family RhinocerotidaeThis is a brain endocast of the a beaver. An endocast or endocranial cast is a cast made of the mold formed by the impression the brain makes on the inside of the neurocranium (braincase), providing a replica of the brain with most of the details of its outer surface. Endocasts can also form naturally, when sediments fill the empty skull, after which the skull is destroyed and the cast fossilized. Scientists are increasingly utilizing computerized