科学家周一宣布发现了似乎是世界上最完好的鸭嘴龙化石： 67亿岁的植物，动物，其中包含恐龙化石和皮肤组织，并有可能肌肉和器官。
Rare Mummified Dinosaur Unearthed: Contains Skin, and Maybe Organs, Muscle
这些恐龙都是更大更壮的鸟臀目恐龙，例如剑龙、甲龙和鸭嘴龙的先祖。
These dinosaurs were the forerunners of the bigger and more spectacular ornithischians like stegosaurus, ankylosaurus and the duck-billed dinosaurs.
另科学家十分惊奇的是，仅有一组恐龙是癌症的受害者——它就是鸭嘴龙。研究人员在97个恐龙的尾骨里发现了29个良性肿瘤块。
Much to their surprise, they found that only one group suffered from cancer-the hadrosaurs, or "duck-billed" dinosaurs. 29 benign tumors were found in the tail bones of 97 animals.
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