~ Office Supplies ~~ Buy Posters ~~ A-Z Products ~~ Website Advertising


Prehistory - Wikipedia

<<Up     Contents

Prehistory

Redirected from Prehistoric

Prehistory usually refers to the period of human history before writing. Or more precisely, the period that left no written records that we know about, whether originals or later copies. In Egypt, prehistory would end around 3500 BC. In New Guinea, prehistory would end around 1900. Still earlier periods of time are usually known as geological history.

When did prehistory begin? People disagree. Some would begin it with Homo erectus, around 1.5 million years ago. Others would begin it around 40,000 BC, with the Cro-Magnons.

Prehistory is often subdivided by a three-age system:

wikipedia.org dumped 2003-03-17 with terodump




 
 
33 carats blue Tanzanite zoisite rough crystal specimen jewelry cabbing gemstone 6 grams lot parcel
 33 carats blue Tanzanite zoisite crystal specimen jewelry cabbing 6 grams lot parcel 
 
8 carat black OBSIDIAN gem stones Polished rectangle blocks Cabbing cab cabochon rough gemstones
 8 carat black OBSIDIAN Polished rectangle blocks Cabbing cab cabochon  
 
60 gr Arizona pink red yellow PETRIFIED WOOD Cab lapidary rough tumble polished cabbing gemstone lot
 60 gr Arizona pink red yellow PETRIFIED WOOD Cab lapidary tumble polished cabbing lot 
 
91 carats Red SUNSTONE Feldspar Tumbled Polished raw uncut rough jewelry gemstone 18 grams Pretty
 91 carats Red SUNSTONE Feldspar Tumbled Polished raw uncut jewelry 18 grams Pretty 
 
50 carats Mandarin Orange SPESSARTITES GARNETS gems tumble polished raw cab rough gemstones 10 grams
 50 carats Mandarin Orange SPESSARTITES GARNETS tumble polished raw cab 10 grams