美国有线新闻 CNN 阿根廷发现新品种恐龙忍者巨龙（在线收听）

What region is bordered by the Andes Mountains, the Colorado River and the Atlantic Ocean? Balkan Peninsula, Amazon Basin, Patagonia or Western Plateau. The only option here that's surrounded by all these features is Patagonia, a region in Argentina.

If you thought dinosaur names peaked with Titanasaurs. Let's talk about ninjatitan. It sounds so big and stealthy at the same time. Ninjatitan zapatai is what researchers are calling some fossils recently found in Argentina. The skeleton is incomplete and there's a lot that's still unknown about this animal.

But paleontologists believe that ninjatitans were sauropods with bodies like brontosaurus. Think long necks, thick legs and the length of about 65 feet. They're not the biggest titanosaurs. One of them named argentinasaurs is thought to have been as long as 115 feet.

But scientists say the recently discovered fossils are older than those of other types of titanosaurs and that suggests that ninjatitans might have pre-dated other dinosaurs that looked like them. The region of Patagonia in southern Argentina has been an epicenter of dino discoveries.

以下哪个地区与安第斯山脉、科罗拉多河和大西洋接壤？巴尔干半岛、亚马逊盆地、巴塔哥尼亚还是西部高原？上述地点中唯一满足所有要求的是阿根廷的巴塔哥尼亚地区。

如果你认为恐龙的名字在泰坦龙中达到顶峰。那我们来谈谈忍者巨人。这个名字听起来又大又隐秘。“忍者巨龙”是研究人员最近在阿根廷发现的一些化石。其骨骼并不完整，因此有关这种生物还有很多未知的东西。

但古生物学家认为“忍者巨龙”是身体像雷龙的蜥脚类动物。想想它们的长脖子、粗腿以及约65英尺的体长。它们不是最大的泰坦龙。其中一种名为阿根廷泰坦龙，据信体长115英尺。

但科学家表示，最近发现的化石比其他类型的泰坦龙更古老，这表明“忍者巨龙”可能比其他看起来与它们很像的恐龙更早出现。阿根廷南部的巴塔哥尼亚地区一直是恐龙化石发现的中心。