Transitional Fossils - These are the fossils that supposedly show the "missing links" / transitional forms between one group of organisms and another.


(Also see Human Origins for a treatment of those fossils that are supposedly linked to human Evolution.)

 

Archaeopteryx - Probably the most famouse non-human (and non-ape) "transitional fossil" would have to be Archaeopteryx. According to a lot of sources, this creature is the missing link between dinosaurs and birds, but does this claim live up to scrutiny?