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Why isn't the fossil record complete?
Aristotle
An ancient Greek philosopher and polymath, whose writings covered diverse fields such as metaphysics, biology, ethics, and politics, significantly influencing Western intellectual history.
Phylogeny
The complete evolutionary history of a group of organisms.
Evolutionary History
Describes the processes and pathways through which species have changed and diversified over time from common ancestors.
Common Ancestor
The most recent individual from which any two or more species are descended.
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