Ancient lake

Epic card · No. 5218

The term ancient lake has two different meanings. For biologists, an ancient lake has consistently carried water for a geologically significant amount of time, typically more than one million years. For paleontologists, an ancient lake is paleo-evidence of a lake, a lake bed evident in geology. Biologically ancient lakes existed before the latest glacial maximum. Due to the prolonged life of ancient lakes, they serve as models for isolated evolutionary traits and speciation. Lake Baikal is considered the oldest, as clear evidence shows that it is 25–30 million years old. Most of the world's bodies of water are less than 18,000 years old.

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