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 Ancient animals :: dinosaurs 
Classification of dinosaurs
Dino-sore
Large dinosaurs may not all have been slow - but they were certainly clumsy, tripping over themselves in their race for food, research suggests.
Dinosaur mass extinction
From 220 million years ago until 65 million years ago, a vast number and changing variety of dinosaurs lived on Earth. Then, within a very short period of time, the dinosaurs became extinct.
T-Rex gets lippy
Contrary to popular belief, the fearsome Tyrannosaurus Rex probably did not have lips and Triceratops most likely did not have cheeks.
Time of the Titans
When dinosaurs first appeared about 230 million years ago the world was very different to as we know it. There were very few representatives of any animal groups alive today - no mammals, birds or lizards (although there were some lizard-like reptiles).
Spirits of the Ice Forest
There is considerable evidence for the existence of dinosaurs in polar latitudes. This episode is based on remarkable finds made at two sites in Australia. The evidence for that part of Australia being then within the Antarctic Circle and being seasonally very cold is based on several lines of evidence.
Death of a Dynasty
At the end of the Cretaceous Period, 65 million years ago, all the dinosaurs died out. The question of why the dinosaurs went extinct is one of the most frequently asked questions to all dinosaur palaeontologists. There have been many different ideas put forward as an explanation from the serious to the ridiculous.
 
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