A Hidden Baby Dinosaur Fossil Encased in Rock for Millions of Years
Baby Dinosaur Fossil Discovery- A prehistoric baby dinosaur fossil hidden inside solid rock for 113 million years has been unveiled through CT scanning — sparking the biggest dinosaur discovery South Korea has seen in 15 years. Meet Doolysaurus huhmini.
In 2023 researcher Hyemin Jo from the Korean Dinosaur Research Center made a discovery on Aphae Island, off the southwestern coast of South Korea. She found a dinosaur skeleton stuck in a block of rock. At first it looked like a few leg bones and vertebrae.. It turned out to be much more important. The fossil is from a baby dinosaur. It is a species that scientists did not know about before. The fossil belongs to a dinosaur. It is now called Doolysaurus huhmini. This dinosaur lived around 113 to 94 million years ago.
This is a find. The fossil is, from a baby dinosaur. It is the new dinosaur species found in South Korea in 15 years. The dinosaur skeleton has parts of its skull. This makes it an important find. It is one of the important dinosaur fossil finds in East Asian paleontology in years.
“When we first found the specimen, we saw some leg bones preserved and some vertebrae. We didn’t expect skull parts and so many more bones. There was a fair amount of excitement when we saw what was hidden inside the block.”— Jongyun Jung, Lead Researcher, UT Jackson School of Geosciences
How a CT Scan Unlocked the Secrets of the Hidden Dinosaur Fossil
What makes this baby dinosaur fossil discovery truly extraordinary is the role played by cutting-edge micro-CT scanning technology. Because the tiny dinosaur skeleton was still encased in hard rock — and manually extracting the fossil would have taken years — researchers transported the specimen to the University of Texas High-Resolution X-ray Computed Tomography (UTCT) facility, the first facility of its kind in the world.
The baby dinosaur skull CT scan results stunned scientists. The micro-CT revealed not just leg bones and vertebrae, but hidden skull fragments — the first pieces of dinosaur skull ever found in South Korea. Researchers were also able to identify gastroliths (stomach stones) still sitting in their original position, which indicated the animal had been preserved largely intact before fossilization. The CT scan dinosaur fossil study also confirmed through histological analysis of the femur that the individual was only about two years old and still actively growing at the time of death.
Why this matters: South Korea has one of the world’s richest records of dinosaur footprints and eggshells — but actual dinosaur bones have been exceedingly rare. The discovery of Doolysaurus suggests many more hidden fossils may be waiting inside Korean rock formations, detectable only through advanced CT scanning.
What Did This Prehistoric Baby Dinosaur Actually Look Like?
Classified as an early-diverging neornithischian and a member of the thescelosaurid family, Doolysaurus was a small, bipedal dinosaur that walked upright on two hind legs. At approximately the size of a large turkey in its juvenile stage, an adult Doolysaurus may have grown to roughly double that size. Scientists believe it was likely an omnivore, feeding on a mixed diet of plants, insects, and small animals — a conclusion supported by its gastroliths.
Perhaps the most charming detail: researchers believe this tiny dinosaur skeleton may have been covered in a coat of soft, fuzzy filaments — not quite feathers, but hair-like structures known from relatives of the species. Study co-author Prof. Julia Clarke of UT Austin described it vividly — she said it would likely have been quite cute, possibly resembling a small fluffy lamb.
“It might have looked a bit like a little lamb.”— Prof. Julia Clarke, Jackson School of Geosciences, University of Texas at Austin
Why Scientists Named It After a Cartoon Character
The Doolysaurus huhmini is a dinosaur that scientists have found. They have given it this name because the Doolysaurus reminds them of Dooly the Little Dinosaur. Dooly is a character from a cartoon in South Korea that kids have loved since the 1980s. This cartoon has a green dinosaur that is young and has fuzzy features, which is why the name Doolysaurus is so perfect for this dinosaur.
The name huhmini is a way to honor Min Huh, an important Korean scientist who studied dinosaurs for a long time. Min Huh worked with dinosaurs in Korea for over thirty years. Even started the Korean Dinosaur Research Center. He also worked with UNESCO to help keep dinosaur fossil sites, in Korea. The Doolysaurus huhmini is the third dinosaur that has been found and named in South Korea.
Why This New Dinosaur Species Discovery Matters for Global Paleontology
Beyond the sheer delight of discovering a cute dinosaur fossil, Doolysaurus fills a critical gap in scientists’ understanding of dinosaur diversity during the mid-Cretaceous — a period of intense evolutionary exchange between what is now East Asia and North America. The species belongs to a lineage with representatives on both continents, offering new clues about ancient land connections and dinosaur migration patterns between Eurasia and the Americas over 100 million years ago.
The research team — from UT Austin and the Korean Dinosaur Research Center — published their findings in the peer-reviewed journal Fossil Record on March 19, 2026. Lead researcher Jongyun Jung is already planning a return expedition to Aphae Island, and the team believes micro-CT technology could unlock many more hidden dinosaur fossil discoveries across Korea’s islands in the coming years.
