Carnivorous Dinosaurs Were As Big As T-Rex Left In Jurassic Australia

Carnivorous dinosaurs were as big as T-Rex left in Jurassic Australia
Carnivorous dinosaurs were as big as T-Rex left in Jurassic Australia

Carnivorous dinosaurs were as big as T-Rex left in Jurassic Australia. Paleontologists have analyzed the dinosaur footprints for 151 to 165 million years from 11 sites in South Queensland, most of which are large (30-50 cm long) and very large (more than 50) theropactor dinosaurs. cm long). Produce clues, including Australia's largest carnivorous dinosaur footprint (79 cm tall).

Reconstruction of a South Queensland Jurassic dinosaur footprint maker in front of a silhouette of the largest known Tyrannosaurus rex. "I always wonder where Australia's great carnivorous dinosaurs were. But I think we found them here in Queensland," said lead author Dr. Anthony Romilio of the University of Queensland School of Chemistry and Molecular Biology. A paleontologist

"The specimens of these giant dinosaurs were not fossilized bones, which are the kinds of things that are usually kept in museums." Rather, we saw footprints, which in Australia are much more abundant. "These footprints were built by dinosaurs passing through swampy forests that once occupied much of the landscape of southern Sardinia."

Dinosaur footprints from an oak mine in Queensland, Australia. Image credit: Anthony Romilio Dr. Romilio and colleagues documented a total of 20 fossil dinosaur footprints and five footprints from Walloon charcoal measurements from the Oki and Rosewood districts of southern Queensland. They identified a total of 11 caterpillar mine sites (one in OKE and ten in rosewood) and four types of dinosaur footprints.

Larger and much larger tracks were more common than shorter ones. Most of the tracks belong to theropods, the same group of dinosaurs, including the Australovator, Velocactor, and their bird of modern descent. Dr. "Most of these footprints are about 50 to 60 centimeters long, of which the very large tracks are actually about 80 cm," said Romilio.

"We estimate that these footprints were created by large carnivorous dinosaurs, some of which were 3 meters high at the hips and perhaps 10 meters long." To put that perspective, the Tyrannosaurus Rex was about 3.25 meters on the hips and 12-13 meters long, but it didn't appear until 90 million years after our Queensland giants.

"The Queensland Track was probably built by the giant Carnosaurus, the group that includes the Allosaurus." At the time, it was probably the largest predatory dinosaur on the planet. "The research was published in the Journal of Historical Biology. Dinosaur tracks show predators like T. Rex fed stomachs in Australia 160 million years ago. Perhaps the most iconic dinosaur is the Tyrannosaurus rex, a large predator that now lived in North America. We have now come to know that carnivorous dinosaurs of a similar size were also present in ancient Australia.

In the Footsteps: We learned about these carnivores by studying fossils discovered 90 years ago. A coal miner approached him while digging at the Walloon Coal Measure in Rosewood, near Ipswich and Oki, north of Toowoomba, Queensland. Fossils are not bones. They are fossil tracks, the only form of fossil that records the movements of animals and preserves details of their behavior and environments.

Searching for fossil footprint records in Australia, we came across a file photograph from the 1930s showing a dinosaur's footprint inside a coal mine. Although these mines have been closed for a long time, photography led us to examine the fossil footprints collected at the time and stored in museums and other footprints like them.


Older than T-Rex
Older than T-Rex

Older than T-Rex: We discovered that many types of carnivorous dinosaurs suggested the rich forests and swampy environments of southern Queensland in the Jurassic period. The smallest would be the size of an emu, while the largest was only 3 meters long, almost as big and equipped as a T rex.

The footprint of this large dinosaur is approximately 80 cm long, approximately the distance from the center of its body to the tip of its outer arm. The fossil footprint is about 160 million years old, the oldest known T. Rex is 90 million years older than fossils.

This suggests that the impression is of a different predatory dinosaur. Although T. in size and dietary preference. Like the Rex, these ancient massive Australian trackers may be slimmer and longer than North American dinosaur icons.



Fast runners, formidable hunters
Fast runners, formidable hunters

Fast runners, formidable hunters: in addition to individual tracks, we found evidence of tracks where multiple tracks made by the same animal are preserved. Based on what we know about how two-legged animals move, we can use pathways to discover how dinosaurs traveled through their environment.

Many of the largest dinosaurs move at a walking pace, because the length of their steps is less than the estimated length of their feet. However, the two tracks had very large steps that are typical of animals in the race.

The passing distance suggests that these large dinosaurs were moving at a speed of 35 kilometers per hour. For comparison, the average human can run at speeds of around 24 kilometers per hour. These speeds meant that the ancient track makers were formidable hunters. Unfortunately, no track was preserved for the largest track producer.

Lucky conditions: Not all types of plains are equally suitable for fossil preservation. It appears that it happened in South Queensland that dinosaurs had stepped on a mat of swampy plant material that was then covered in sand, resulting in sandstone footprints in the coal bed.

The miners were able to easily remove the soft coal from underneath the sandstone and, to their surprise, found these ancient footprints. We might not have known about these tracks were it not for coal mining and the sharp eyes of 20th century miners who saw unusual features in the rock. There are likely to be even more treasures hidden under our feet.


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