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Pompeii-like ash kept dino remains fresh

机译:像庞贝城一样的火山灰保持恐龙保持新鲜

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摘要

It's hot storage. Millions of years before volcanic ash entombed the Roman town of Pompeii, a group of dinosaurs succumbed to a similar fate. China's famous feathered dinosaur fossils owe their exquisite preservation to volcanic eruptions between about 130 and 120 million years ago. The Jehol fossils have transformed our understanding of dinosaurs by showing that the relatives of Velociraptor and T, rex had a feather-like body covering, like birds. The Jehol deposits also preserved soft tissue from early mammals and flowering plants. Baoyu Jiang of Nanjing University, China, and colleagues think they know why the remains are so well preserved. They found carbon layers on the bones with a structure and composition that suggests they are charred soft tissue - and the limbs of skeletons are flexed as if they had been trapped in volcanic ash.
机译:它是热存储。在火山灰吞没罗马庞贝古城之前的数百万年,一群恐龙屈从于类似的命运。中国著名的羽毛化石恐龙化石得益于其精美的保存,其保存时间约为130至1.2亿年前。热河化石显示出Velociraptor和T,rex的亲属有羽毛般的身体覆盖物,像鸟类一样,改变了我们对恐龙的理解。热河矿床还保存了早期哺乳动物和开花植物的软组织。中国南京大学的姜宝玉及其同事认为,他们知道为什么遗体保存得如此好。他们发现骨头上的碳层具有某种结构和成分,表明它们是焦软的组织-骨骼的四肢弯曲,就好像被火山灰困住了一样。

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    《New scientist》 |2014年第2955期|16-16|共1页
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  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
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  • 正文语种 eng
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