新動物代表此前未知的綱

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來源:來自丹麥極地研究所

在格陵蘭島一口井的寒冷深處,研究人員發現了一種非凡的新動物。根據發表在十月刊《形態學雜誌》(Journal of Morphology) 上的一份報告以及本週在丹麥雜誌《極地鋒線》(Polarfronten) 上發表的另一份報告,這種身長 0.1 毫米的淡水生物,被稱為 Limnognathia maerski,不屬於任何此前已知的動物綱。因此,研究人員在動物家譜樹上建立了一個新的分支來代表這個新的綱,他們稱之為微頜綱 (Micrognathia)。

L. maerski (右圖) 的研究表明,這種微小的生物擁有一套出人意料的複雜頜骨,它用這套頜骨從井中生長的水生苔蘚中提取它所食用的細菌和藻類。它還與某些海洋動物有一些共同特徵。這些生物的一個全雌性、無性繁殖的群體,目前被儲存在哥本哈根大學的冰箱中以供進一步研究。

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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