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This 31-foot “terror croc” ate dinosaurs. Now it’s back

Date:

April 15, 2026

Source:

Columbus State University

Summary:

A massive, bus-sized “terror croc” that once preyed on dinosaurs has been brought back to life in stunning detail with the first scientifically accurate full skeleton of Deinosuchus schwimmeri. Stretching over 30 feet long, this ancient apex predator ruled the southeastern U.S. more than 75 million years ago—and now visitors can see it up close at the Tellus Science Museum, the only place in the world with this replica.

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An artist’s rendering showing Deinosuchus schwimmeri emerging from the water and preying on an Appalachiosaurus. The rendering demonstrates how its size and scope, compared to those of its prey, earned it its dinosaur-killer “terror croc” reputation. “Reaper in Paradise.” Credit: Bob Nicholls, 2003, edited

Dr. David Schwimmer, a leading authority on the massive North American crocodilian genus Deinosuchus and a geology professor at Columbus State University, has helped bring a prehistoric giant back to life. His decades of research played a key role in building the first scientifically accurate, fully mounted skeleton replica of Deinosuchus schwimmeri. Long described as a "dinosaur-killer," this enormous predator was likely at the very top of the food chain in its time.

Living in the eastern United States between 83 million and 76 million years ago, Deinosuchus schwimmeri was a school-bus-sized relative of modern alligators that preyed on dinosaurs. The animal could grow up to 31 feet (9.45 meters) long. A life-size replica of this ancient giant is now on display at the Tellus Science Museum in Cartersville, Georgia. The project reflects two years of collaboration between Schwimmer and Triebold Paleontology Inc., a company known for creating detailed fossil skeleton models for museums and institutions worldwide.

Museum Display Brings Prehistoric Ecosystem to Life

"Each year, we have thousands of students visit us from across Georgia and neighboring states," the Tellus Science Museum's director of education, Hannah Eisla, explained. "Many of these students come on school field trips specifically to learn more about the region they call home and how it has changed over time. The addition of Deinosuchus schwimmeri allows us to provide a more detailed picture of this area's ecosystem in the Cretaceous Period."

"Tellus is currently the only museum to have a cast of Deinosuchus schwimmeri, so this is an experience our visitors can't get anywhere else," added Rebecca Melsheimer, the museum's curatorial coordinator. "The scale of the dinosaurs and other creatures that lived during [the Late Cretaceous epoch] is hard to capture in words or pictures. We can tell you that Deinosuchus is 30 feet long, but seeing it is far more impactful."

Naming a New Species After Decades of Research

In 2020, a team of paleontologists officially identified and named the species Deinosuchus schwimmeri in recognition of Schwimmer's extensive contributions to the field. Their study, published in the Journal of Vertebrate Paleontology in July 2020, noted that the name honored "his tireless work on the Late Cretaceous paleontology of the Southeast and Eastern Seaboard, USA." This recognition followed years of detailed fossil analysis, scientific publications, conference presentations, and Schwimmer's 2002 book on the genus.

For more than 40 years, Schwimmer has explored fossil sites across Alabama, Georgia and Texas in search of Deinosuchus remains. Supported in part by National Geographic grants, his work has uncovered important specimens that are now housed in major institutions such as the Smithsonian Institution in Washington, D.C., the American Museum of Natural History in New York, and the Tellus Science Museum.

Building a Life-Size Replica With Modern Technology

According to Schwimmer, creating a scientifically accurate, full-scale replica requires careful attention to detail. For this project, the Triebold Paleontology team used high-resolution 3D scans of fossil specimens to reconstruct the animal's skeletal structure and armored skin features. The result is a highly detailed model that not only impresses visually but also contributes to scientific understanding.

"These replicas are more than just creating a 'scare factor,'" Schwimmer explained. "Understanding dinosaurs' predatory habits helps us decode some of nature's greatest survival strategies. By studying these ancient apex predators, we are essentially looking back in time to see exactly how life adapted and dominated a changing world."

A Lifelong Fascination With a Prehistoric Predator

Schwimmer's interest in Deinosuchus began during his childhood in New York City, where he lived just 10 blocks from the American Museum of Natural History. A display featuring a large skull first captured his imagination. He later