The Dunkleosteus is one of the most formidable fish to have ever swam in the seas, but its disappearance is something of a mystery.

A longnose lancetfish washed ashore in a rare appearance in Seaside, Oregon. Seaside Aquarium staff examined the 5-foot-long ...

Nicknamed the 'Twilight Zone' fish due to its hunting grounds deep within the mesopelagic zone, a murky region of ocean lying between 650 to 3,300 feet below the surface, the longnose lancetfish ...

A giant mosasaur fossil vertebra discovered in Mississippi may belong to one of the largest sea predators ever found.

The Trump administration's proposal to change the definition of the word “harm” in the Endangered Species Act could bring ...

Deinosuchus had a wide snout like an alligator’s. But unlike alligators, it thrived in salty waters. It lived between 82 and 75 million years ago.

Imagine stepping onto the icy shores of ancient Antarctica—not to see today’s tuxedoed, knee-high Emperor penguins, but to ...

A prehistoric hell ant that lived among dinosaurs 113 million years ago had an unusual way to kill its prey and sheds new ...

Titanoboa cerrejonensis, the largest snake ever discovered, lived around 60 million years ago and could grow up to 47 feet long. While the snake's size and strength surprised scientists, what shocked ...

Scientists have unearthed a 240-million-year-old fossil of a Dinocephalosaurus, a long-necked marine reptile that closely ...

In 2009, the discovery of Titanoboa cerrejonensis fossils in Colombia's Cerrejón coal mine revealed a massive snake that ...

The prehistoric crocodile relative may have tolerated both freshwater and saltwater habitats, allowing it to conquer North ...