Portuguese 
English 
Spanish 
4 min of reading 
0 comments 
At 9.45 meters long — the size of a school bus — Deinosuchus was the largest crocodile to ever walk the Earth, and now scientists have assembled a complete and scientifically accurate replica of its skeleton for the first time
It was almost 10 meters long and weighed up to 8 tons in the largest specimens.
Its jaw measured 2 meters and was capable of crushing dinosaur bones with a single bite.
The Deinosuchus — meaning “terrible crocodile” — lived about 80 million years ago, during the Late Cretaceous, in swamps and rivers of what is now the United States.
-
The U.S. Army and Navy jointly tested a missile that exceeds Mach 5 and travels at over 6,100 km/h — it maneuvers in the air, evades any radar, and no existing defense system is capable of intercepting it.
-
In 2022, NASA shot a spacecraft at an asteroid at 6.6 km per second and changed its orbit by 33 minutes — now Europe’s Hera probe is traveling there to inspect the damage and make planetary defense an exact science.
-
A 250-million-year-old fossil revealed an embryo curled inside an egg and proved that the ancestors of all mammals — including humans — reproduced like reptiles.
-
At a depth of 3,000 meters in Australia’s largest marine park, scientists found more than 110 species previously unknown to science — among them, a soft-bodied shark and a ghost-like fish.
Despite being known from fragmented fossils for over a century, no one had ever assembled a complete skeleton of it.
Until now.
According to the Tellus Science Museum in Georgia, a 9.45-meter replica was assembled in partnership with paleontologist David R. Schwimmer, who has been studying the animal for over 40 years.
Two to three times larger than the planet’s largest living crocodile
The largest living crocodile today — the saltwater crocodile — reaches 6 meters and 1 ton.
Deinosuchus was up to three times heavier and almost twice as long.
Estimates based on vertebrae and skulls indicate that the largest individuals could exceed 12 meters.
Its skull had a broad snout, similar to an alligator’s, with a bulbous tip and four teeth in the premaxilla.
The 2-meter-long lower jaw was first reconstructed in the 1950s by Edwin H. Colbert and Roland T. Bird.
At the time, they estimated the animal to be over 15 meters — an exaggerated measurement due to lack of comparative material.
Schwimmer, using more precise equations, estimated between 8 and 10 meters and about 2 tons for average specimens.
The predator that ambushed dinosaurs at the water’s edge
Deinosuchus was a semi-aquatic ambush predator.
It would remain partially submerged in coastal rivers and swamps, waiting for prey to approach.
Bite marks found on bones of hadrosaur dinosaurs — large herbivores — suggest it attacked animals much larger than any current crocodile would dare to face.
It’s as if a modern alligator decided to hunt a rhinoceros — but Deinosuchus had the size and jaw to succeed.
This is why it earned the popular nickname “dinosaur-eater.”
A discovery that began in 1858 and took 165 years to complete
The first indications of Deinosuchus appeared in 1858, when Ebenezer Emmons illustrated two fossil teeth without knowing what they were.
In 1909, William Jacob Holland unearthed the first bones in Montana and named the species Deinosuchus hatcheri.
The excavation revealed osteoderms — the bony plates covering the back —, vertebrae, ribs, and a pelvic bone.
In the 1950s, researchers at the American Museum of Natural History assembled a skull reconstruction that was on display for almost 50 years.
But a complete skeleton had never been assembled, because no isolated fossil contained enough bones.
The Tellus Science Museum replica took 2 years to be built by Triebold Paleontology, combining data from multiple specimens and decades of Schwimmer’s research.
The paleontologist who dedicated 40 years to a crocodile
David R. Schwimmer, a professor at Columbus State University, has been studying Deinosuchus for over four decades.
In 2002, he created the first computational reconstruction of 90% of the skull using well-preserved cranial material.
The species Deinosuchus schwimmeri was named in his honor.
Schwimmer’s fieldwork was supported by National Geographic.
According to Christopher A. Brochu, a paleontologist specializing in crocodilians: “The osteoderms are distinct enough that even fragments can confirm the presence of Deinosuchus.”
The world Deinosuchus lived in
80 million years ago, the southeastern United States was covered by tropical coastal swamps.
Sea levels were much higher than today, and much of the American interior was submerged.
Herbivorous dinosaurs like hadrosaurs drank water at the edges of these swamps.
That was exactly where Deinosuchus waited.
Fossils have been found in Texas, Montana, New Jersey, and Georgia — indicating that the animal was distributed over a wide range.
Deinosuchus vs. Sarcosuchus: the dispute for the title of largest crocodile
Deinosuchus has a rival in the dispute for the title of the largest crocodilian in history.
The Sarcosuchus imperator, which lived in Africa 112 million years ago, could also reach 12 meters.
However, Deinosuchus had more robust osteoderms — its body armor was denser.
Both were the size of buses and hunted animals much larger than themselves, but they lived on different continents and in different eras.
They never met.
What we still don’t know about Deinosuchus
To this day, no complete real skeleton has been found in nature.
All remains are fragmentary: pieces of skull, vertebrae, osteoderms, and ribs.
This makes size estimates variable — ranging between 8 and 15 meters depending on the method.
Furthermore, there is debate about how many species existed.
D. hatcheri and D. schwimmeri may represent variations or distinct species.
The Tellus Science Museum replica is the most accurate assembly ever made, but it is a reconstruction, not an original fossil.
Schwimmer himself acknowledges that the animal “remains largely a mystery shrouded in armor.”
Will we ever find a complete skeleton? Only time — and a lot of excavation — will tell.
Seja o primeiro a reagir!