This would have been a survival advantage for the hatchlings

His shaggy fur stands on end as he hears the terrifying roars behind him

which lived during the Miocene

Its hind limbs were powerful and adapted to running at high speeds

These modern estimates are based on measurements of long bones (femur

Gallimimus bullatus Europasaurus This would have been aGallimimus bullatus was a theropod dinosaur that lived approximately 70 million years ago during the Late Cretaceous, in what is now Mongolia. It is classified within the Ornithomimidae family, known as "ostrich dinosaurs" due to its resemblance to modern birds and its adaptation to run at high speeds. This species was characterized by being a bipedal dinosaur with a light and slender body. It had a small head with a toothless jaw, like that of other