Cretaceous and Maelstrom

Cretaceous was an Ichthyosaur and Maelstrom was a Pliosaur. They are the main antagonists of the film Ice Age: The Meltdown. They are two sea creatures that were frozen in ice and freed when the ice melted.

They made one role in the film when they tried to eat Manny, Sid, Diego, Ellie, Crash, and Eddie when they were crossing a frozen area of water. Luckily, they managed to escape. They appear again in the film when Ellie is trapped in the rising flood. When Manny and his friends went to rescue Ellie, Cretaceous and Maelstrom tried to eat them. However, they were tricked into hitting a log wedged between a large rock, which fell and crushed them.

In the movie novel Ice Age: The Great Escape, however, it was stated that the two reptiles were taken away and ostensibly eaten by mini-sloths.