Show Utah Yields Yield's R Rare re Fossils 1 Washington Fossil deposits of the earliest liest known n animal life on earth dating back between ne ad two bil bil- of or years yeara furnished the material for Tor field Utah and oI Montana Mortana ana from Crom which Dr Ch Charles E. E Resser Ressel mil lI d Erwin r win R R. Pohl Smithsonian pal- pal l have ave just t r returned These fossils are round rounel m In tue rocks The consist of trilobites a a crustacean line which became ex extinct about abou the time timo the coal measures were deposited Their closest modern relative is the shrimps brine those shrImps those creatures co abundant abunda t in the Great Salt Lake and in the Dead seat sea A t billion and a half haIr years ago these trilobites were the time dominant life in the thenea sea nea there being so far as is known no land laud animals Up to lo the present ime about 2000 different kinds of them ire are known from the Cambrian alone |