JAIME CHIRINOS / SCIENCE PHOTO LIBRARY JAIME CHIRINOS / SCIENCE PHOTO LIBRARY
Alioramus attacking Olorotitan dinosaurs, illustration. Alioramus is a carnivorous theropod dinosaur that lived during the Late Cretaceous Period (around 100 to 66 million years ago) in what is now Asia. It reached lengths of around 5-6 metres. Olorotitan is a duckbilled dinosaur (hadrosaurid) that is known from fossils found in the far eastern regions of Russia. It dates from the Late Cretaceous, between 72 and 66 million years ago. It reached lengths of around 8 metres.
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