The Dinosaurs That Went Extinct ... Twice - National Geographic

Stones & Bones is back! I’m Nicholas St. Fleur, a science editor at National Geographic, and today we explore the “lost dinosaurs” of the Bahariya Oasis in Egypt.

To Egyptologists, the Bahariya Oasis is known as the Valley of Golden Mummies, a necropolis where archaeologists have uncovered hundreds of gilded and decorated mummies dating back to the Greco-Roman era, roughly 2,000 years ago.

But to paleontologists, the oasis is sacred because of something far older and far more legendary: Spinosaurus. The first ever specimen of this ferocious river monster was collected here more than a hundred years ago, along with fossils of several other enigmatic dinosaurs.

Until they were lost forever, casualties of the World War II bombing that destroyed much of Munich. Swallowed by the flames, these dinosaurs essentially went extinct twice.

National Geographic Explorer Hesham Sallam, a paleontologist at the Mansoura University Vertebrate Paleontology Center in Egypt, has spent the past decade collecting clues to what the Bahariya Oasis looked like nearly 100 million years ago, long before it was buried beneath the desert.

His team is still working to rebuild what was lost when the bombs obliterated the collection. So far Spinosaurus aegyptiacus is the main missing dinosaur species to have since been reintroduced to science, though that was based on a specimen National Geographic Explorer Nizar Ibrahim found in Morocco, not the Bahariya Oasis.

But with the help of paleontologists who came before him, Sallam has begun to resurrect the beasts of Bahariya’s past from the site itself—revealing how dangerous a place it once was for plant-eaters and meat-eaters alike.

“You are not safe anywhere,” Sallam told me on a recent call. From giant carnivores and lumbering herbivores to aquatic predators and, most recently, flying reptiles, scientists have found every kind of terror in Bahariya. “Even if you’re trying to swim, there is Spinosaurus and marine reptiles—there is nowhere to hide.”

This prehistoric landscape was even wilder than the man who first excavated Bahariya Oasis had ever dreamed.

In 1911, German paleontologist Ernst Stromer arrived at the Bahariya Oasis following an eight-day, more than 200-mile trek from Cairo on camelback. There, he unearthed the first ever dinosaur bones from Egypt, and over the decades helped discover new species like the sauropod Aegyptosaurus and a parade of predators, including the theropod Bahariasaurus ingens and another one he labeled Carcharodontosaurus, a “shark-toothed” meat-eater larger than Tyrannosaurus rex (it was eventually reevaluated to be a new species named Tameryraptor markgrafi ).

Stromer placed his fossils in the Bavarian State Collection of Paleontology in Munich, where some, like Spinosaurus, went on display. But during WWII, Stromer began to fear Munich would be targeted for air raids. He pleaded with the museum director, a fervent Nazi, to remove the fossils for safety. However, the museum director refused and even threatened to report Stromer, a fierce anti-Nazi.

Then, on April 24, 1944, the British Royal Air Force bombed Munich, destroying the museum and every known Bahariya dinosaur fossil collected to that point.

“The bones burned into nothingness,” said National Geographic Explorer Matt Lamanna, a paleontologist at Carnegie Museum of Natural History in Pittsburgh. “When I was growing up, Spinosaurus existed really only as pictures in books.”

Lamanna has collaborated with Sallam on finds from the oasis for more than a decade. As a young paleontologist, Lamanna was enthralled by stories of Stromer and his lost dinosaurs. While we were chatting for this story, he showed me one of his prized possessions: an original copy of Stromer’s 1934 scientific paper that named and described Bahariasaurus ingens.

“ Bahariasaurus is my white whale of dinosaurs,” Lamanna told me.

In 2000, he took up Stromer’s mantle to excavate the Bahariya Oasis. There he was part of the team that uncovered the first new dinosaur from the oasis since Stromer’s era: a titanosaur fittingly named Paralititan stromeri. Still, though, Bahariasaurus eluded him.

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