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Unexpected Discovery: Stone Kept in a School for Years Revealed Fossilized Dinosaur Tracks Over 200 Million Years Old
A simple white slab sat in the main office of a school in Australia for over 20 years, going unnoticed. For many, it was just a rock marked with chicken-like footprints. However, it turned out to be incredible dinosaur tracks.
Now, this stone has become one of the most important fossil discoveries in Australia. Research led by Anthony Romilio, a paleontologist at the University of Queensland, revealed that the rock contains 66 fossilized footprints left by 47 individual dinosaurs. These tracks date back to the Early Jurassic period, about 200 million years ago.
Researchers claim that these footprints provide valuable evidence of the presence and behavior of ornithischian dinosaurs in the region.
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A Hidden Fossil Treasure
The tracks have been attributed to Anomoepus scambus, a small-sized ornithischian. Ornithischians were primarily herbivorous and would later give rise to well-known species like Triceratops.
However, during the Early Jurassic, these ancestors were agile and smaller creatures.
With three-toed feet, long legs, and beak-shaped heads, these dinosaurs likely lived in groups and fed along riverbanks.
The orientation of the footprints suggests a social behavior, with several individuals moving together.
However, researchers emphasize that other factors may have influenced this pattern, such as a natural barrier. The footprints also indicate that the dinosaurs were walking at a moderate speed, about 6 km/h.
The Discovery of the Fossil’s Importance
The significance of the slab remained unknown until local residents, familiar with Romilio’s work at Mount Morgan, approached him. Using 3D imaging techniques and light filters, the paleontologist was able to digitally highlight the footprints, revealing previously invisible details.
“Significant fossils like this can go unnoticed for years, even in plain sight,” Romilio said in a press release. “It’s incredible to think that such a rich piece of history was resting in a schoolyard all this time.”
This case is not isolated. At Callide Mine, Romilio found another fossilized rock being used to mark the entrance to a parking lot.
This two-ton stone contained tracks of a bipedal dinosaur with 80 cm legs. In another curious episode, a third fossil was covered in resin and used as a bookend.
Why Are These Dinosaur Tracks So Valuable
In Australia, early Jurassic dinosaur bones are extremely rare. Therefore, these tracks help fill gaps about the fauna of the time. Studies indicate that similar tracks have been found in other regions of Queensland, such as Mount Morgan and Carnarvon Gorge.
The scarcity of bones can be explained by the type of fossil preservation. For a bone to become a fossil, specific conditions are required, such as rapid burial and mineral-rich waters.
Tracks, on the other hand, can fossilize in different scenarios where bones would decompose quickly. This type of fossil is classified as “Type I deposit,” where only traces, like footprints, are preserved.
Despite the abundance of dinosaur tracks, no Anomoepus bones have been found in Australia. But Romilio believes this may change.
“For the vast majority of fossils in Australia, most … are not found by paleontologists,” he told The Guardian. “It’s other people raising their hands and asking: is this significant or not?”
With information from ZME Science.
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