Hidden for millions of years, scientists identify a new dinosaur species deep in the Sahara

Paleontologists have recently discovered a previously unknown species of Spinosaurus deep in the Sahara Desert, revealing a dinosaur with a remarkable skull crest unlike anything observed before in this group. Named Spinosaurus mirabilis, which means “wonderful spine lizard,” the new species offers insight into the diversity, evolution, and ecology of giant predatory dinosaurs that lived approximately 95 million years ago during the Cretaceous Period.

What Makes Spinosaurus mirabilis Unique?

The newly found dinosaur is characterized by a massive, scimitar-shaped crest on its head and long, interlocking teeth reminiscent of modern crocodiles. Its cranial structure indicates that it had an unusual feeding adaptation for hunting fish, referred to as an interdigitating piscivorous jaw. Unlike other spinosaur species, which were generally found in coastal areas, S. mirabilis lived deep inland in Niger, hundreds of kilometers from any ocean. This discovery challenges earlier assumptions about spinosaur habitats and features that dinosaurs were ecologically versatile.

Who Discovered The Dinosaur?

The team, led by Paul Sereno of the University of Chicago, unearthed the first fossils in 2019 while delving into a remote area of the central Sahara. Sereno explained the moment:

"This find was so sudden and amazing, it was really emotional for our team," he stated.

The team employed solar-powered equipment in the desert to create 3D digital models of the skull bones, realizing the discovery’s importance for the first time.

How Did S. mirabilis Live?

According to Sereno, this species likely had a semi-aquatic lifestyle, hunting fish in rivers while going through a forested inland scenario.

"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 described.

Its anatomy indicates it was almost 40 feet long, weighed 5 to 7 tons, and was capable of combining terrestrial and aquatic hunting methods.

How Is S. mirabilis Different from Other Spinosaurs?

Spinosaurus mirabilis is only the second known spinosaur species after S. aegyptiacus, found in Egypt in 1915. Major differences include a larger head crest, longer snout, wider-spaced teeth, and extended hind limbs. Its dental placement, the interdigitating fish-trap jaw, is distinctive among spinosaurs and features a highly specialized piscivorous diet.

How Did the Researchers React to Their Discovery?

"I’ll forever cherish the moment in camp when we crowded around a laptop to look at the new species for the first time," Sereno remembered.

Why Does This Discovery Matter?

This discovery reshapes our understanding of spinosaur evolution, emphasizing inland adaptations and ecological diversity. It illustrates that these predators were not strictly marine but could thrive in riverine, forested habitats. Moreover, the ornate crest and unusual dentition offers insights into behavior, feeding methods, and evolutionary innovation during the Cretaceous.

When Were the Fossils Found and Studied?

The fossils were initially uncovered in 2019, with subsequent fieldwork and analysis continuing for many years. The findings were published in Science, offering a comprehended analysis of the species’ anatomy, ecology, and paleobiology.

FAQs:

Q1: What is Spinosaurus mirabilis?
Spinosaurus mirabilis is a newly discovered species of spinosaur dinosaur. It lived approximately 95 million years ago and is notable for its unique crest and fish-eating adaptations.

Q2: Where was it discovered?
Fossils were found in a remote inland region of the Sahara Desert in Niger. This location is hundreds of kilometers from ancient coastal areas where other spinosaurs were typically found.