Arizonasta löytyi tuhansien dinosauruksen jälkien tanner
http://www.eurekalert.org/pub_releases/2008-10/uou-dd101708.php:SALT LAKE CITY – University of Utah geologists identified an amazing concentration of dinosaur footprints that they call "a dinosaur dance floor," located in a wilderness on the Arizona-Utah border where there was a sandy desert oasis 190 million years ago.
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