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Ancient Spider Fossils Transform Understanding of Prehistoric Ecosystems

6/1/2025

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Summary

Story summary

Fossils of the colossal spider genus Mongolarachne jurassica, unearthed in Inner Mongolia, date back 165 million years. Once misidentified, these remarkable specimens showcase evolutionary traits that set them apart from today’s orb weavers. Their extraordinary preservation sheds light on ancient arachnid behavior, reshaping our understanding of prehistoric ecosystems.

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Story summary

Fossils of the colossal spider genus Mongolarachne jurassica, unearthed in Inner Mongolia, date back 165 million years. Once misidentified, these remarkable specimens showcase evolutionary traits that set them apart from today’s orb weavers. Their extraordinary preservation sheds light on ancient arachnid behavior, reshaping our understanding of prehistoric ecosystems.