2015考研英语阅读谁吃了恐龙_大学英语阅读

2015考研英语阅读谁吃了恐龙

　　The Cretaceous equivalent of zebra and antelopesthe victim species in every wildlifedocumentary about the dramas of the African savannahwere herbivorous dinosaurs calledornithopods. Frequently, these were taken by theropods. But not always. When Ms Drumhellerand Mr Boyd examined the bones of juvenile upper-Cretaceous ornithopods dug up in Utahthey saw marks on one skeleton that looked suspiciously like those modern crocodiles inflictwhen biting and tearing at their prey. On examining these marks more closely, they found acrocodilian tooth stuck in one of them.

　　白垩纪被称为鸟脚亚目食草恐龙其地位相当于斑马和羚羊每部有关非洲大草原的纪录片中被捕杀的种群。这些恐龙经常被兽脚亚目食肉恐龙捕食。但不总是这样，当庄姆海勒与博依德对犹他州出土的白垩纪年幼的鸟脚亚目食草恐龙的化石进行检查时，他们在一副骨架上发现了看上去像是遭受现代鳄鱼撕咬的痕迹。在对这些痕迹进一步检查后，他们发现一颗鳄鱼目动物牙齿嵌在其中一块骨头上。

　　Crocodile tears

　　鳄鱼的眼泪

　　It was not a large tooth. Its size suggests the animal which made it was no more than a metreand a half long. Such a predator would have been unable to take on an adultornithopod. Nevertheless, this tooth is the first unarguable proof that crocodilians did indeedsnack on dinosaurs. Moreover, it helps to confirm suspicions that the other crocodile-bite-likemarks that Ms Drumheller and Mr Boyd have discovered really are what they look like. Bycombining that with an analysis of the whole site, the two researchers argue that what theyhave discovered is a dinosaur nesting ground that was being raided by crocodilians.