新的化石揭示更古老的人類祖先

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在肯亞巴林戈區內羅畢東北 150 英里處工作的科學家們發現了可能是已知最早人類祖先的遺骸。在昨天的記者招待會上,該團隊報告說,這些骨骼的年代至少可追溯到六百萬年前,這使得它們比之前被認為代表最早原始人類的衣索比亞化石還要早 150 多萬年。法國和肯亞研究人員在十月下旬發現了這種被暱稱為“千禧年人”的新原始人類的最早遺骸。從那時起,他們已經發掘出至少屬於五個個體的骨骼。“這一發現不僅比以前已知的任何發現都更古老,”法國學院的團隊成員馬丁·皮克福德根據路透社的報道說,“而且還處於更高階的進化階段。” 這種新原始人類的先進特徵包括其上腿骨,這表明黑猩猩大小的“千禧年人”是直立行走的,以及它的牙齒:它的小犬齒和大臼齒與現代狀況相似。然而,這種原始人類與原始人類家族的其他古代成員究竟有何關係,還有待觀察。目前,該團隊計劃公佈其初步發現,並繼續進行挖掘。“我確信那裡還有更多發現,”皮克福德說,“甚至可能更古老。”

Kate Wong is an award-winning science writer and senior editor at 大眾科學 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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