While looking for program information on the National Geographic website I found a game called "Fossil Hunt". It is a little kiddish, but it is interesting enough to pass the time.
The page I found Fossil Hunt on is located at
http://channel.nationalgeographic.com/channel/dinosaurs/dino-death-trap.html, just scroll down a ways and bingo.
So far, I've only been able to get to level 2.
Sass