The Archaeopteryx lithographica fossil shown in the image is the oldest-known fossil with feathers. The fossil shows evidence that the organism had teeth, wings with fingers and claws, and a backbone that extended into a tail. For these reasons, the Archaeopteryx lithographica is considered a transition fossil, meaning that it links and exhibits traits from two different ancestrallgroups. Use the chart in part B to identify the two animal groups that this fossil links together. Also explain how transition fossils provide evidence for evolution.

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