1342. Maelstrom

Maelstrom is a globidens that hunted animals during the Ice Age.
Maelstrom is shown in the beginning frozen in a great block of ice that was jarred loose when the wall of ice began crumbling. The ice melted, releasing both Cretaceous and him into the lake which was all but abandoned by most animals. When they made it to the ice lake, the first animal that they had encountered and eaten was Stu the glyptodont, leaving behind only his shell. The two sea reptiles then swam further down the series of rivers where they eventually reached Manfred's herd as well as Crash, Eddie, and Ellie. Maelstrom intended to eat Sid but could not catch him, as Sid was already escaping with Diego, and had only just escaped Maelstrom as he broke off a massive chunk of ice where the sloth and saber-tooth had stood only moments before.
Later, when the dam broke, the two reptiles went swimming on the wall of water that was slowly approaching towards the escaping masses and pulled down Manny when he was swimming to save Ellie. Manny devised a plan to rid himself of the two sea reptiles, by having them try to chase him, he tricked them into hitting a log that was wedged under a large rock. The plan worked, freeing Ellie, and knocking the two reptiles down with the boulder. Although the two reptiles are presumed to have been crushed by the boulder, there might be a possibility that they may have survived the boulder and have gotten swept away with the flood water when Scrat broke the glacier.