Back in 2009, paleontologist Judith Pardo-Pérez unearthed the fossilized remains of an ichthyosaur — a dolphin-like marine ...

After a temperature spike in the mid-Cretaceous, the climate began to cool, and the tenor changed. Other creatures, such as frogs, salamanders, turtles, crocodiles, and snakes, proliferated on the ...

In the Early Cretaceous, iguanodontians were some of the first dinosaurs to evolve complex chewing mechanisms rather than just gulping down food like other reptiles. In the Late Cretaceous, hadrosaurs ...

See more dinosaurs that lived in the Late Cretaceous. Other groups of organisms also diversified. The first snakes evolved during this time, and by the end of the Cretaceous, flowering plants were a ...