Forum:Game timeline (request for suggestions/feedback)

So, I have a time travel game where players from two possible futures fight to change the timeline. I have an artist who is producing some artwork for a print and play version, and I have a provisional timeline. I'd appreciate some feedback on the various events; maybe someone can suggest better events, or a better way to illustrate them? Link to the game here:

http://www.boardgamegeek.com/boardgame/47312

...and the latest rule set: http://www.boardgamegeek.com/thread/430712

... and the events:

10 - Dinosaur Extinction

9 - Cro-Magnon/Neanderthal

8 - Wheel

7 - Stonehenge

6 - Atlantis

5 - Crucifiction

4 - Agincourt

3 - Inquisition

2 - Columbus

1 - Difference Engine

Note that I'm looking for events that will make for good images, rather than necessarily internal consistency. The theme is fantasy vs steampunk, and the each event will have three cards; two different versions of the event, and a hybrid consisting of half of each version joined together.

All feedback gratefully appreciated!