论文部分内容阅读
地质古生物学家普遍认为,长颈水生爬行动物在2亿2千万年前就绝灭了。可是,在它们“绝灭”9000万年之后的地层中,竟然又发现了这类动物的化石,这实在给古生物学家们带来了一份意外的惊喜。去年8月,北京自然博物馆征集到一件罕见的水生爬行动物化石。看着这块化石,科技人员惊呆了,好像发现了活着的恐龙一样振奋人心!多么熟悉的身影,似曾相识。乍一看与幻龙的形态相似,可是这根本是不可能的,因为幻龙在距今2亿年前的三叠纪晚期就告别了地球,可这件化石却发现在距今1.3亿年前的侏罗纪晚期的地层中。它们的时间相差了9千万年左右。要知道,恐龙离我们只有6千5百万年的时间啊!从骨骼结构来看,它们与幻龙有本质的区别,我们给它起了个新名字——凌源中国水生蜥(拉丁文是 SinohydrosaurusLingyuanensis)。长长的名字怪绕嘴的,但它是根据“国际动物
Geological paleontologists generally agree that long-necked aquatic reptiles extinct 220 million years ago. However, the fossils of these animals were found in the strata 90 million years after their “extinction”, which in fact gave the paleontologists an unexpected surprise. Last August, Beijing Museum of Natural History collected a rare aquatic reptile fossil. Looked at this piece of fossils, science and technology staff was shocked, as if finding a living dinosaurs as exciting! How familiar figure, deja vu. At first glance similar to the shape of a Phantom dragon, but this is simply impossible, because the Phantom dragon bid farewell to the Earth in the Late Triassic dating back 200 million years ago, but this fossil was discovered 130 million years ago Pre-Jurassic strata. Their time difference of 90 million years. You know, dinosaurs only 65 million years away from us ah! From the skeletal structure point of view, they are essentially different from the magic dragon, we give it a new name - Lingyuan China Hydra (Latin Is SinohydrosaurusLingyuanensis). Long names blame, but it is based on “International Animals.”