When I was first learning about evolution, one of the things that I really wanted to see was smooth, gradual transitions in the fossil record. I didn't want to see fossils based on part of a jaw bone, or a series of creatures very different from each other being displayed as relatives.
It's taken a lot of looking into the subject before I finally found these examples. I'm going to list examples, and then follow it with an article that explains the transition:
Hominid (Human) Evolution
Reptile to Mammal Evolution
Horse Evolution
Keith Miller discusses several transitional sequences (including the two above)
Whale Evolution Chart
Whale Evolution Article*
Ceratopsian Evolution
The Dilemma of the Horned Dinosaurs (Discuss the Ceratops)
Early Vertebrate Evolution
Several Misc. Examples of Smooth Transition
Early Amphibians
http://darla.neoucom.edu/DEPTS/ANAT/Pakicetid.html
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