Imagine a dense humid forest, where you can't see the sky for the trees. Many of the trunks are so huge that you would need over an hour to complete one circle around them. In the sky, you can see some fascinating creatures with some crests. Incredible giants make their way from the thickets, crushing everything in their path.
Can you imagine that this bulletproof armor doesn't have even a single unprotected spot?! What is this mysterious world? Perhaps, some distant planet? It may remind you of Pandora from the iconic Avatar movie. But... You don't need to go that far.In fact, this is what Earth looked like over a hundred million years ago.
Then, in the Cretaceous period, the world was just teeming with incredible creatures! Imagine a multi-ton Mamenchisaurus that shook the whole forest with the stomp of its huge feet. If the trees caught fire, the giant could easily put it out even at the treetops. To do this, it only had to fully stretch its long neck like a fire escape.
Of course, the ancient reptile didn't put out anything but used its long neck to reach some real delicacies, like the most tender and juicy young shoots at the treetops. The Cretaceous period had so many fascinating animals! Where did the twins of ostriches and kangaroos come from in the early Cretaceous?
And how did the ancient reptiles create real fight clubs for training the young?