Fossil Horse Teeth, Florida- USA (Best Available) Bracelets Opal has been a stone

Opal has been a stone of myth and mysticism for thousands of years

Classic Widmanstätten patterns are visible

but prior to the opening of Pit 11 in the mid-1950s

when it needed to either defend itself from large carnivorous predators

Fossil Horse Teeth, Florida- USA (Best Available) Bracelets Opal has been a stoneIt's a little know fact that most of the evolution of the horse actually occurred on the North American continent. From around 54 million to 10,000 years ago, horses were an extremely successful species. They were grazers that covered the Great Plains, but eventually spread out through many parts of the continent. At some point in time some horses managed to cross into Asia then Europe by means of the Arctic Asia land bridge which existed during that