
Over the past 3 1/2 billion years of geologic time since life appeared on earth, some 4 trillion species of organisms may have existed, most microscopic. Descent with modification, or evolution, resulted in many forms most wonderful and beautiful, as Darwin stated. Some of these faded away, like the extinct trilobites, others merely diminished, like the still extant crinoids, and still many others perished in one of many major extinctions. A magnificent fossil record has been left behind to inspire wonder. From stromatolites created by ancient bacteria, to ammonites, fossil fish, fossil insects, crinoids, fossil mammals and dinosaurs, Fossils of mysterious creatures and fossil amber, the fossil dealers at fossil mall.com strive to match the amazing diversity of this "life once animated". Many of the fossils for sale are rare or exotic fossils worthy of display in any museum.source:http://www.fossilmall.com/
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