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In any one locality, you'd find 50 or 60 different species of reptiles living side by side
二疊紀隨處可見五六十種和睦相處的爬行動物，
specialized on different diets, different habitats and so on.
它們對食物各有偏好，而且有著不同的習性。
This is the skull of dicynodon.
這是二齒獸的頭骨。
It's sitting with the top of the skull, just here coming down to the snout.
這里是頭骨頂部，下面這里是頜部。
This is a tortoise-like beak that sits under here.
它有一個龜嘴一樣的吻，就在這下面。
Dicynodon was a hippo-sized plant eater.
二齒獸是一種河馬般大小的植食動物。
Filled the niche of the cow in a modern day pasture except these would live in herds and roam around the Permian flood plains.
像現代草原上的牛群一樣布滿整個地方，成群結隊地在二疊紀洪漫平原上漫步。
Its principle predator was dinogorgon, the king of the Permian jungle.
它們的主要天敵是麗齒獸，二疊紀的叢林之王。
These were real terrors. The first time the world had ever seen such top carnivores as they're called.
它們真的很可怕。是世界上首次出現的兇猛食肉動物。
They had sabre teeth this sort of length, and just like the famous sabre tooth cats of much later.
它們長著劍齒，能長到這么長，就像很久以后出現的著名的劍齒虎一樣。
They would leap on the backs of these hippopotamus-sized plant, just piercing through their thick skin tearing the flesh.
它們會跳到這些河馬一樣大的植食動物的背上，劃開厚厚的皮膚，撕扯里面的肉。
