A giant blade-crested spinosaurus, the “hell heron,” discovered in the Sahara
Science Daily
February 23, 2026
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Scientists have uncovered a new species of spinosaurid dinosaur, *Spinosaurus mirabilis*, in the remote Sahara, rewriting previous assumptions about these predators. The fossilized remains, discovered in inland river deposits in Niger, reveal a creature with an enormous, scimitar-shaped crest made of keratin—similar to human fingernails—and vibrant coloration during its lifetime. This adaptation suggests the crest served as a dramatic display structure for courtship or intimidation. Unlike earlier theories suggesting spinosaurs were fully aquatic, *S. mirabilis* appears to have thrived in an inland habitat, wading through shallow waterways in a forested environment hundreds of miles from ancient shorelines.
The discovery began with a 70-year-old clue: a single tooth resembling those of the massive predator *Carcharodontosaurus*. A research team led by Paul Sereno of the University of Chicago followed this线索 into the depths of the Sahara, encountering a Tuareg guide who directed them to a fossil-rich site. There, they uncovered fragments of the new species, including two crests and jaw bones that revealed tightly interlocking teeth—a unique adaptation for catching slippery fish. This find challenges previous ideas about spinosaurid behavior, indicating these predators were powerful waders rather than fully aquatic hunters.
The significance of this discovery lies in its ability to reshape our understanding of dinosaur evolution and ecosystems. *Spinosaurus mirabilis* fills a critical gap in the fossil record, offering insights into how these apex predators adapted to inland environments. Sereno described the moment of realization as emotional and transformative for his team, highlighting the enduring allure of paleontological exploration. This find not only advances scientific knowledge but also ignites curiosity
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Originally published on Science Daily on 2/23/2026