👉 Gigantactinids are a group of extinct marine reptiles that lived during the Late Cretaceous period, around 69 million years ago. They were characterized by their large size and elongated body forms, which allowed them to adapt to the harsh conditions of their oceanic habitats. Some species of gigantactinids were known for their exceptional strength and endurance, with some having been able to survive for several months at a time in the depths of the ocean.
