Labels:crt screen | curtain | elephant | monitor | paper nautilus | plant | snail | tree OCR: NATURAL artifacts Description Diameter can measure more than 60cm. The term ammonite refers to an extinct group of mollusks Along with dinosaurs. ammonites died out at the end of the Cretaceous Period about 65 million vears ago Their existence on earth lasted for about 330 million vears The hard I shella which these organisms occupied are found Ammonites fossils in many place all over the Australl world Ammonites are still collected and prized for their beauty but they are also important to the study of geology and evolution They provide reference for dating sediments aid in the explor ration of petroleum and other economic products, and help us to reconstruct the history of the Earth. -- Stratum: Cretaceous Origin Australia Because each specimen is unique the photogr aph shown may differ ...
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