Phobosuchus was a prehistoric monster, the largest species of crocodile ever known to have walked the earth. Instead of zebras and wildebeest, it fed on dinosaurs.
Purgatorius is an early mammal that lived alongside the dinosaurs. Purgatorius is a proto-primate, one of four extinct species believed to be the earliest examples of an evolutionary line that led to monkeys, apes and humans.
Acanthodian, a fish, is one of the first vertebrates with jaws. This revolutionary adaptation allows fish, a once-rare lifeform, to take over the planet.
Eusthenopteron, an ancient fish, was an agile predator with a nasty bite. Eusthenopteron had many unique features shared by the earliest land vertebrates.
While the cycles of life and death flowed on Earth 65 million years ago, unbeknownst to the living things on the surface, death lurks in the ionosphere.
New research reveals that terror birds - large, prehistoric carnivores that evolved alongside dinosaurs - hunted their prey with quick, opportunistic strikes. Trace Dominguez reports.
On a recent dinosaur dig Kasey-Dee Gardner noticed that fossils not only come in all shapes and sizes, but also in all different colors. This week she finds out why.