The Miocene epoch (23.03 to 5.332 million years ago) boasted a real life sea monster, Carcharocles megalodon. Whereas the giant shark mainly inhabited the open ocean, this image depicts a hypothetical encounter with a swimming Platybelodon, a prehistoric mammal related to the elephant. The bones of these elephantids sometimes show evidence of attack by sharks.
Acheroraptor, a bird-like dinosaur belonging to the dromaeosaur family of dinosaurs, beats a T. rex to a fresh carcass. Acheroraptor was discovered in Montana in the Hell Creek Formation, a fossil-rich division of rocks, in November 2013.
Also read: Birds in the Time of Dinosaurs