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000 14C years ago
That is a human skull for size comparison
though immature
Morrison Formation of Moffat County
Castor canadensis, beaver brain endocast Oviraptor 000 14C years agoThis 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