新动物代表此前未知的纲

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来源:来自丹麦极地研究所

在格陵兰岛一口井的寒冷深处,研究人员发现了一种非凡的新动物。根据发表在十月刊《形态学杂志》(Journal of Morphology) 上的一份报告以及本周在丹麦杂志《极地锋线》(Polarfronten) 上发表的另一份报告,这种身长 0.1 毫米的淡水生物,被称为 Limnognathia maerski,不属于任何此前已知的动物纲。因此,研究人员在动物家谱树上创建了一个新的分支来代表这个新的纲,他们称之为微颌纲 (Micrognathia)。

L. maerski (右图) 的研究表明,这种微小的生物拥有一套出人意料的复杂颌骨,它用这套颌骨从井中生长的水生苔藓中提取它所食用的细菌和藻类。它还与某些海洋动物有一些共同特征。这些生物的一个全雌性、无性繁殖的群体,目前被保存在哥本哈根大学的冰箱中以供进一步研究。

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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