新的化石揭示更古老的人类祖先

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在肯尼亚巴林戈区内罗毕东北 150 英里处工作的科学家们发现了可能是已知最早人类祖先的遗骸。在昨天的记者招待会上,该团队报告说,这些骨骼的年代至少可追溯到六百万年前,这使得它们比之前被认为代表最早原始人类的埃塞俄比亚化石还要早 150 多万年。法国和肯尼亚研究人员在十月下旬发现了这种被昵称为“千禧年人”的新原始人类的最早遗骸。从那时起,他们已经发掘出至少属于五个个体的骨骼。“这一发现不仅比以前已知的任何发现都更古老,”法国学院的团队成员马丁·皮克福德根据路透社的报道说,“而且还处于更高级的进化阶段。” 这种新原始人类的先进特征包括其上腿骨,这表明黑猩猩大小的“千禧年人”是直立行走的,以及它的牙齿:它的小犬齿和大臼齿与现代状况相似。然而,这种原始人类与原始人类家族的其他古代成员究竟有何关系,还有待观察。目前,该团队计划公布其初步发现,并继续进行挖掘。“我确信那里还有更多发现,”皮克福德说,“甚至可能更古老。”

Kate Wong is an award-winning science writer and senior editor at 大众科学 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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