Beneath the Sahara’s Sands, A Team of Researchers Unearthed a Giant Dinosaur, and It Looks Nothing Like the Others

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Apr 25, 2026 - 20:30

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Beneath the Sahara’s Sands, A Team of Researchers Unearthed a Giant Dinosaur, and It Looks Nothing Like the Others

A team of scientists has uncovered Spinosaurus mirabilis, a new dinosaur species with a massive, blade-like crest that lived much farther from the coast than previously believed. This exciting find challenges the idea that spinosaurids were fully aquatic.

Led by Paul Sereno from the University of Chicago, the team unearthed the fossil in Niger in 2022 after years of work. With its impressive features and unique traits, Spinosaurus mirabilis shows that they were likely more land-based than we thought, hunting in inland waterways rather than the ocean.

The Desert’s Incredible Find

It all started in 2019 when scientists spotted fragments of a large crest and jaw bones in the desert. At first, they didn’t realize what they had stumbled upon. But after returning in 2022 with a bigger team, they uncovered even more fossils and finally figured out they had found a new species.

As mentioned in the study, published in Science, the discovery was made in a remote part of Niger, far from any ancient coastlines.

“This find was so sudden and amazing, it was really emotional for our team,” recalled Paul Sereno, professor of organismal biology and anatomy at the University of Chicago. “After one member of our team generated 3D digital models of the bones we found to assemble the skull — on solar power in the middle of the Sahara. That’s when the significance of the discovery really registered.”

Skull Reconstruction Of 'spinosaurus Mirabilis', The Newly Identified Scimitar Crested Spinosaurid — _{Skull reconstruction of ‘spinosaurus mirabilis’, the newly identified scimitar-crested spinosaurid. Credit: Keith Ladzinski}

The most striking feature of Spinosaurus mirabilis is its massive, curved crest, which scientists think was covered in keratin (like human fingernails) and might have been brightly colored. According to him, the crest probably used for display, whether for attracting mates or showing off to rivals.

The End of the Aquatic Spinosaurus Theory?

For years, paleontologists believed spinosaurids were primarily aquatic, spending most of their time hunting fish in the water. However, Spinosaurus mirabilis challenges this theory. Discovered about 500 to 1,000 kilometers from coastlines, in a forested, river-crossed environment, this dinosaur doesn’t fit the profile of the spinosaur fossils typically found near ancient shorelines.

Sereno has described the dinosaur as a “hell heron,” capable of wading into deeper waters, but he envisions it spending most of its time hunting in shallower areas.

“I envision this dinosaur as a kind of ‘hell heron’ that had no problem wading on its sturdy legs into two meters of water but probably spent most of its time stalking shallower traps for the many large fish of the day,” he explained in a statement released by the University of Chicago.

A Striking Close Up Of A Fossilized Dinosaur Skeleton, Showcasing Its Sharp Teeth And Spiny Structure — _{A striking close-up of a fossilized dinosaur skeleton, showcasing its sharp teeth and spiny structure. Credit: Paul Sereno / University of Chicago}

The dinosaur’s unique teeth, which locked together tightly to trap slippery prey, indicate it was a highly skilled hunter in these inland waters, further supporting the idea that spinosaurids were not purely aquatic.

A Long Road to the Sahara’s Hidden Fossils

This discovery wasn’t just a lucky find. It all started with a reference to a fossil tooth that had been recorded over 70 years ago in Egypt’s Western Desert. However, no one had revisited the site, so Sereno and his team embarked on a bold expedition across the Sahara in search of fossil beds. After a lengthy and challenging journey, guided by a Tuareg man, they finally reached a fossil-rich area that would reveal the remains of the dinosaur. As Sereno put it:

“It was an adventure and a half wandering into the sand seas to search for this locale and then find an even more remote fossil area with the new species.”

He has spent over 30 years working in the Sahara, and it’s clear he has a deep connection to the desert. To date, his team has uncovered more than 100 tons of fossils. He noted that the extreme conditions and remote locations make discoveries like this one even more rewarding.