Ancient carnivorous fish discovered
英语课
BEIJING, Sept. 14 (Xinhuanet) -- Scientists had discovered the fossils of a new species of ancient carnivorous fish, National Geographic 1 reported Monday.
The newly-found ancient fish, "Laccognathus embryi", is a 1.8-meter-long predator 3, which was "waiting to lunge out to grab whatever was in front of it," said study co-author Ted 2 Daeschler, a vertebrate zoologist 4 at the Academy of Natural Sciences in Philadelphia, the U.S..
It had a jaw 5 filled with sharp teeth that were 1.5 inches long, the Journal of Vertebrate Paleontology described.
The fish lived in the Devonian period, 415 to 360 million years ago, which "was a fish-eats-fish kind of world," Daeschler said. "There was a real arms race going. If you didn't have good armor on your body, you were very vulnerable."
"It's not just finding the animal - it's also placing the animal in its evolutionary 6 crucible," Daeschler added.
Its closest living relative is the lungfish which can survive in the drought, scientists said.
Scientists hope the finding can help in their study on the revolution of fishes as well as other species.
adj.地理学的，地理的
- The city's success owes much to its geographic position. 这座城市的成功很大程度上归功于它的地理位置。 来自《简明英汉词典》
- Environmental problems pay no heed to these geographic lines. 环境问题并不理会这些地理界限。 来自英汉非文学 - 环境法 - 环境法
vt.翻晒，撒，撒开
- The invaders gut ted the village.侵略者把村中财物洗劫一空。
- She often teds the corn when it's sunny.天好的时候她就翻晒玉米。
n.捕食其它动物的动物；捕食者
- The final part of this chapter was devoted to a brief summary of predator species.本章最后部分简要总结了食肉动物。
- Komodo dragon is the largest living lizard and a fearsome predator.科摩多龙是目前存在的最大蜥蜴，它是一种令人恐惧的捕食性动物。
n.动物学家
- Charles darwin was a famous zoologist.查尔斯达尔文是一位著名的动物学家。
- The zoologist had spent a long time living with monkeys.这位动物学家与猴子一起生活了很长时间。
n.颚，颌，说教，流言蜚语；v.喋喋不休，教训
- He delivered a right hook to his opponent's jaw.他给了对方下巴一记右钩拳。
- A strong square jaw is a sign of firm character.强健的方下巴是刚毅性格的标志。
adj.进化的；演化的，演变的；[生]进化论的
- Life has its own evolutionary process.生命有其自身的进化过程。
- These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。
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Ancient