Paleontologists have discovered a new species of giant marine reptile named Tylosaurus rex in fossils found in Texas [1, 2].

The find reshapes the scientific understanding of mosasaur evolution and proves that some species reached unprecedented sizes during the Late Cretaceous period [1, 2].

The predator lived approximately 80 million years ago [1, 2]. Measuring an estimated 43 feet in length [1], the animal was significantly larger than modern great white sharks and is described as more brutal than any previously discovered mosasaur [3].

Researchers uncovered the fossils in the U.S., identifying the creature as a dominant predator of its era [1, 2]. The discovery provides new data on how these marine reptiles adapted to their environment to maintain apex status in the ancient oceans [1].

While most reports identify the creature as a mosasaur, some conflicting accounts have mistakenly characterized the find as a kraken-like octopus [3]. However, the primary research team identifies the specimen as a member of the mosasaur family, a group of extinct aquatic lizards [1, 2].

The specimen's size and anatomical features suggest it occupied the top of the marine food chain. By analyzing the skeletal structure, paleontologists can better map the growth patterns of Late Cretaceous reptiles [1].

The animal lived about 80 million years ago

The identification of Tylosaurus rex establishes a new benchmark for the maximum size of marine reptiles in the Late Cretaceous. This discovery suggests that the ecological pressures of the time favored extreme gigantism in apex predators, providing a clearer picture of the prehistoric marine food web and the evolutionary trajectory of the mosasaur lineage.