Animate the evolutionary path in the timeline Flash

You can see at a stroke in Flash what kind of evolution creatures have come from life bodies that appeared in the early days.

Browsing is from the following.
this
http://www.johnkyrk.com/evolution.swf

As the triangular arrow comes out, if you drag it with the mouse to the right, the time axis moves and it will evolve. When it goes to the end, it appears with feeling like 2nd line, 3rd line.

It is quite interesting. The world is going to be destroyed somehow when moving in the opposite direction.