Transitional fossils like Tiktaalik and Archaeopteryx demonstrate evolutionary transitions between different groups of organisms.
Transitional fossils provide evidence of organisms having traits from both ancestral and descendant groups, illustrating evolutionary changes over time. One such example is Tiktaalik roseae, a fossil showing features intermediate between finned fish and legged tetrapods. Another well-known transitional fossil is Archaeopteryx, believed to be closely related to birds and Theropod dinosaurs.
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