鱼鸟的体型如海鸥,它的喙和脑部构造与现代鸟类非常相近,但它却拥有伶盗龙一般尖利的牙齿和强健的下颚。这类动物的骨头于 1870 年代首次被人发现,当时引起了查尔斯·达尔文的关注。当代科学家们说,这种使我们了解到鸟喙最初外观的神奇鸟儿,原来一直都近在眼前。
1. 词汇表 evolved 进化
delicate 纤细而脆弱的
preserved 被保存
fossils 化石
primitive 原始的,远古的
under their noses 在眼皮底下,近在眼前
2. 阅读理解:请在读完上文后,回答下列问题 。 1. Why have bird skulls been difficult to study as fossils?
2. What have researchers made using new fossil discoveries and the latest CT scanning techniques?
3. What kind of creature was Ichthyornis?
4. When were the bones of Ichthyornis first found?
3. 答案 1. Why have bird skulls been difficult to study as fossils?
Bird skulls are tiny and delicate and are rarely preserved as fossils.
2. What have researchers made using new fossil discoveries and the latest CT scanning techniques?
Researchers have made the most advanced 3D model of the skull of a primitive bird.
3. What kind of creature was Ichthyornis?
It was the size of a seagull and had a beak and brain like modern birds, but the sharp teeth and powerful jaws of a Velociraptor.
【New fossil discoveries help explain bird evolution 化石新发现有助于解释鸟类进化过程】相关文章:
★ Loss of biodiversity affects human society 生物多样性减少给人类社会带来影响
★ How to become a billionaire 如何成为亿万富翁
★ Orangutan squeaks reveal language evolution, says study 科学家称红毛猩猩叫声揭示人类早期语言进化过程
★ California wildfires and cloned animals 加利福尼亚州野火,克隆动物衰老过程正常
★ Family, house and home 和家有关的三个词
最新
2019-11-15
2019-11-15
2019-11-15
2019-11-15
2019-11-15
2019-11-15