New Spinosaurus Species Discovered in Sahara Desert

Meet Spinosaurus mirabilis, a massive, fish-eating predator with a dramatic, sword-like crest

Mar. 21, 2026 at 11:13pm

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Paleontologists have unearthed the remains of a new species of spinosaurid dinosaur, Spinosaurus mirabilis, in the central Sahara Desert in Niger. The discovery challenges previous assumptions about the habitats and ecological niches of these ancient predators, as the fossils were found far from coastal regions.

Why it matters

The discovery of Spinosaurus mirabilis represents the first new spinosaurid species identified in over a century. It provides valuable insights into the evolution and distribution of these dinosaurs, expanding our understanding of their adaptations and the environments they thrived in.

The details

Spinosaurus mirabilis was a large, fish-eating predator with a dramatic, sword-like crest believed to have been covered in keratin and brightly colored. Its skull also featured interlocking teeth, a dental adaptation similar to those found in aquatic creatures like ichthyosaurs and crocodiles. The location of the discovery, deep within the Sahara Desert, is particularly significant, as previous spinosaurid fossils were primarily found in coastal sedimentary deposits, leading to hypotheses about a largely aquatic lifestyle. The discovery of S. mirabilis near the remains of a long-necked dinosaur in river sediments suggests the species thrived in inland, forested river systems, expanding our understanding of their ecological niche.

  • In 2019, a team of paleontologists unearthed the initial fossil remains of Spinosaurus mirabilis in the central Sahara Desert.
  • In 2022, further expeditions returned to the site, revealing more of the creature's remains.

The players

Paul Sereno

A University of Chicago professor leading the research team that discovered Spinosaurus mirabilis.

Dani Navarro

A paleoartist who collaborated with the research team to create detailed reconstructions of Spinosaurus mirabilis.

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What they’re saying

“The discovery of Spinosaurus mirabilis highlights the potential for uncovering new dinosaur species in unexpected locations. It underscores the importance of revisiting previously explored sites and collaborating with local communities, like the Tuareg people, who possess invaluable knowledge of the terrain.”

— Paul Sereno, University of Chicago professor

What’s next

The team plans future expeditions to Niger and the establishment of a local fossil lab and museum, furthering research and preserving this paleontological treasure. The reconstructed skull of S. Mirabilis is currently on display at the Chicago Children's Museum, inspiring the next generation of scientists.

The takeaway

The discovery of Spinosaurus mirabilis challenges existing assumptions about dinosaur distribution and evolution, providing valuable insights into the adaptations and ecological niches of these ancient predators. It highlights the importance of collaborative research and the potential for uncovering new species in unexpected locations.