Here I am... late again... LOL!! But at least I'm only entering once every 24hrs.
And speaking of late... it looks like somebody (Pharaoh) already beat me to this, but they didn't explain exactly WHAT it was!!
Yes, that's right... it's Dinosaur Poop... (or Dino Dung)!! Paleontologists and the rather more specialized Paleoscatologists, learn a lot about the eating habits of the Dinos from it... and sometimes,
through the natural process of mineralization, it turns into gem quality rainbow jasper & agate in a large variety of colors and patterns!!
Coprolites: A Few Words On Prehistoric Turds | WebEcoist
Most of it comes from Utah and is actually sold by the pound!!
They have some really nice "specimens" here for sale...
Genuine Dinosaur Coprolite from Utah