PREHISTORIC TIMES
'(<a href="http://www.j-archive.com/media/2009-07-24_J_29.jpg" target="_blank">Jimmy of the Clue Crew reports from the University of Wisconsin-Madison Geology Museum.</a>) Apatosaurus weighed up to 30 tons, so just this <a href="http://www.j-archive.com/media/2009-07-24_J_29a.jpg" target="_blank">bone</a> of the upper leg is 5 feet long & weighs 300 pounds'
the femur