Fossil Facts and Finds is a great site for following up with the Timeline of Life and Old Earth geologic eras.
While heavily Old Earth, this site contains a plethora of information that is valuable for teaching any age of the earth, as well as for exploring an Old Earth without constant propaganda.
Free downloadable booklets; sources for purchasing fossils, images, lesson plans, fossil hunting and so much more.
Well-organized and to the point - can't beat it for a Montessori-like experience :)
