Words explaining what was the reason for the wipe out of Dinosaurs 66 million years ago.  There is land & sea soil  studies showing that a huge asteroid or a comet struck Earth near Mexico & the caribian seas.  That killled most land & ocean animals at the time.  There was a climate change that cut off the sunshine for allowing any growth on planet Earth.

Some of the puzzles that people list for the public get indexed by the search engines (like Google). Some people find those puzzles and cannot figure out how to make a puzzle of their own. So this page now has the navigation sidebar.

There are now buttons on the puzzle so that you can get a clean page, in either HTML or PDF, that you can use your browser's print button to print. The PDF format allows the web site to know how large a printer page is, and the fonts are scaled to fill the page. The PDF takes awhile to generate. Don't panic!