Dinosaur Bone (Best Available) d7a39948fa8ebf83ce3dd499e6279309 Onchopristis is an extinct giant

Onchopristis is an extinct giant (up to 26 feet long) sawfish from Africa and New Zealand

~ 5"  x  5"  x  2" high

water that carried silica penetrated the copper and iron-bearing rock surrounding the cavities

Besides Mexico

as there's an amazing array of colors and tones within each individual stone e

Dinosaur Bone (Best Available) d7a39948fa8ebf83ce3dd499e6279309 Onchopristis is an extinct giantThis genuine piece of fossilized dinosaur bone is from the Jurassic Period, 160 million years ago. Many of these bones were found in the dinosaur graveyards exposed in the Morrison formation in Wyoming and Utah. The term fossilized is important. It is not the dinosaur bones themselves that paleontologists find, but their stony replicas. Fossil bones are created by the slow replacement of bone molecules with the molecules of minerals in ground water.