One of the largest ancient fish on record, known as Dunkleosteus, was actually half as long, but still super chunky, a new study finds.

A fossil fish called Dunkleosteus was less svelte shark and more rotund tuna, but that only made it a fiercer predator in the seas of the Devonian Period.

Scientists have found two specimens of a 444 million-year-old "inside-out" fossil with well-preserved soft tissue, according ...

A big fish story? Maybe so: The greatest sea monster of the Devonian Period (Dunkleosteus terrelli) may be getting downsized. A new article contents that the famous sea monster of the Age of ...

This graphical abstract shows the relative size of Dunkleosteus compared to a human figure, before and after the new calculations. (Russell Engleman, Case Western Reserve University) ...

An ancient, 1-metric-ton fish nearly as long as a school bus had a bite more powerful than nearly everything alive today, a new study reveals. The 10-meter-long Dunkleosteus terrelli cruised ...

Exploding stars known as supernovas may have sparked mass extinctions that wiped out up to 85% of animals on Earth.

A mass extinction of fish 360 million years ago hit the reset button on Earth's life, setting the stage for modern vertebrate biodiversity, a new study reports. The mass extinction scrambled the ...

Dunkleosteus terrelli may have been the world's first apex predator. The force of its bite was remarkably powerful: 11,000 pounds. The bladed dentition of this 400-million-year-old extinct fish ...

" Dunkleosteus was able to devour anything in its environment," said study leader Philip Anderson, at the Department of Geophysical Sciences at the University of Chicago.

That’s not just a future possibility – it ‘may have already happened’, a new study published in the Monthly Notices of the Royal Astronomical Society journal suggests.