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Study Reveals Single Nerve Cord in Ancestral Ecdysozoans

1/11/2025

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Summary

Story summary

A groundbreaking study on Cambrian fossils uncovers that ancestral ecdysozoans probably possessed a single ventral nerve cord, overturning long-held beliefs. Fossil findings from early Scalidophora indicate that the paired nerve cords seen in arthropods evolved separately. This evolutionary leap may have boosted mobility during the Precambrian-Cambrian transition, shedding light on the origins of early animal life.

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Story summary

A groundbreaking study on Cambrian fossils uncovers that ancestral ecdysozoans probably possessed a single ventral nerve cord, overturning long-held beliefs. Fossil findings from early Scalidophora indicate that the paired nerve cords seen in arthropods evolved separately. This evolutionary leap may have boosted mobility during the Precambrian-Cambrian transition, shedding light on the origins of early animal life.