甜蜜蜜

Chinese-led team uncovers oldest known body fossils of ringed worms_蜘蛛资讯网

ft bodies without mineralized bones or shells and rarely fossilize, making their early evolutionary history difficult to reconstruct. Prior to this discovery, the oldest confirmed annelid body fossils

the earliest evolutionary history of annelids but also suggests that the group had already diversified during the earliest Cambrian, evolving both bottom-dwelling and swimming lifestyles."This study s

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发布时间：10:43:28