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Ancient Cavefishes Reveal Secrets of Freshwater Cave Age

8/31/2025

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Summary

Story summary

A study shows amblyopsid cavefishes can help date freshwater caves in eastern North America.
Cavefish independently lost vision in various cave systems, some over 11 million years old.
Genetic mutations related to vision loss occurred between 11.3 million and 0.3 million years ago, offering a new dating method.
The research emphasizes geogenomics' role in studying landform evolution through biological diversification.

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Story summary

A study shows amblyopsid cavefishes can help date freshwater caves in eastern North America.
Cavefish independently lost vision in various cave systems, some over 11 million years old.
Genetic mutations related to vision loss occurred between 11.3 million and 0.3 million years ago, offering a new dating method.
The research emphasizes geogenomics' role in studying landform evolution through biological diversification.