.png?width=1200&auto=webp&trim=0%2C0%2C0%2C0)
You don't expect to stumble over an apex predator of the ancient seas while walking through a landlocked Kansas county. But that's exactly what happened to 12-year-old Corbin Bullard. While exploring Jewell County during a Sedgwick County 4-H Geology Club field trip, the Clearwater resident spotted something unusual poking out of the dirt.
His sudden exclamation caught the attention of his mother, Wendy Bullard. Looking down, they realized they weren't staring at ordinary rock. They were looking at seven or eight massive, fossilized prehistoric vertebrae.
It didn't take long for experts to identify the remains. The monster 80-million-year-old fossil found by the boy isn't a dinosaur at all. It belongs to a Tylosaurus, a massive genus of mosasaur that once ruled the ocean that covered the American Midwest during the Late Cretaceous period.
The Secret Sea in the Middle of America
Most people look at the rolling plains of Kansas and see farmland. They don't picture a brutal, deep-water marine ecosystem. Yet millions of years ago, the Western Interior Seaway split North America right down the middle, stretching from the Gulf of Mexico all the way to the Arctic Ocean.
Corbin's discovery is a direct window into this aquatic past. He noted to local news station KWCH that pretty much all of the middle of America used to be underwater. It's a classic geological reality that still catches folks off guard.
The fossil Corbin found spans more than 15 feet and consists of eight distinct pieces. Extracting a marine beast of this size from the Kansas dirt wasn't a quick afternoon project. The excavation required three separate trips to safely remove the prehistoric fragments without destroying them.
Why a Mosasaur Is Not a Dinosaur
It's an incredibly common mistake. People see a massive, terrifying creature from 80 million years ago and instantly label it a dinosaur. But paleontologists are quick to draw the line here.
Mosasaurs like the Tylosaurus were large marine reptiles. They are actually close relatives of modern-day monitor lizards and snakes, not dinosaurs. While dinosaurs ruled the land, mosasaurs developed paddle-like flippers and powerful, muscular tails to propel themselves through the prehistoric waters.
The largest species of this genus, such as Tylosaurus proriger, could grow up to 45 feet long. They used their massive jaws and double-rowed teeth to snap up fish, sharks, and even smaller mosasaurs. Corbin's 15-foot specimen represents a substantial chunk of an incredibly successful evolutionary predator.
Sweating the Details in the Prep Lab
Finding a fossil is only 10% of the job. The real grind happens after the bones are out of the ground. Corbin has already sunk at least 30 hours into meticulously cleaning the 80-million-year-old rock and sediment away from the vertebrae.
This tedious prep work requires immense patience. One wrong move with a scribe or brush can flake away millions of years of preserved history. Stephanie Hays, the Sedgwick County 4-H agent, expressed her pride in Corbin's willingness to stick through the grueling process to ensure the fossil was preserved correctly.
The 4-H Geology Club serves youth aged 7 to 19, teaching them the basics of earth science through direct, hands-on field experience. Most kids walk away from these trips with small pieces of shale, crinoid stems, or tiny trilobite fragments. Finding a massive apex predator is the ultimate jackpot.
Where to See the Ancient Sea Monster
Instead of locking the find away in a private bedroom drawer, Corbin wants to share his discovery with his community. He's preparing the 15-foot fossil for a public debut.
You can see the Tylosaurus remains in person at the upcoming Sedgwick County Fair, which runs from July 8 to July 11.
If you ever find yourself walking through a rocky outcrop or dry creek bed in Kansas, keep your eyes on the ground. The state's chalk beds and limestone layers are famous among geologists for holding world-class marine specimens. Look for repeating, symmetrical patterns in rock faces that look suspiciously like bone marrow or vertebrae joints. If you find something large, take clear photos with an object for scale, note your exact GPS coordinates, and contact a local university paleontology department or museum before you attempt to dig it up yourself.
