Opalized dinosaur tooth Fossils are normally formed when minerals fill the cellular spaces and crystallize. Opalized fossils, on the other hand, form when bits of silica gel settled into the cracks and fissures of the cellular spaces and form opal. (via)
The Narmer Palette, also known as the Great Hierakonopolis Palette or the Palette of Narmer, is a significant Egyptian archeological find, dating from about the 31st century BC, containing some of the earliest hieroglyphic inscriptions ever found. It is thought by some to depict the unification of Upper and Lower Egypt under the king Narmer.
The Field Museum brings together history, science & archaeology in a fascinating way that's sure to bring out the child in all of us. With visiting exhibitions that showcase everything from papal artifacts to Jackie O.'s closet to the permanently housed Tyrannosaurus known lovingly as "Sue", there's always something new to discover at this museum.