Fossil Crocodile Footprints Are Quite Rare In Asia. Crocodiles from the Cretaceous Period of Korea were on two legs. Several well-preserved pathways created by large crocodiles have been found near the city of Sachon in South Korea, 110 to 120 million years ago (Cretaceous period). The extinct ancestor of modern crocodiles. Surprisingly, the path never contains handprints, and biped walking, in particular, indicates fossil crocodylomorphs that are not known from the path.
Professor Kyung Soo Kim of China National University of Education and his colleagues discovered the well-preserved crocodile path at the Sachon Jae-ri site of the Jinan Formation with clearly defined footprints and localized skin marks. The tracks are 18 meters to 24 centimeters long, which are more than 3 meters long for the trackmaker’s body. We were surprised to find out that the tracks represent 3-4 meter long biped animals, said Professor Kim.
The footprints were initially thought to have been created by a giant bipolar pterosaur walking on the marshes, now we understand that these were biped footprints, said Dr. from the University of Queensland..Anthony Romeo said. The footprints measure approximately 21 cm, suggesting that the trackers’ feet were approximately the same height as the adult human feet. These were tall animals that were more than 3 meters above our estimate.
Although the footprints were everywhere on the site, there were no marks. Paleontologists initially questioned the absence of handprints on the road, pointing out that modern crocodiles are quadrupeds (four-legged). Fossil crocodile footprints are quite rare in Asia, so the abundance of about a hundred footprints was extraordinary, said Dr. Romilio. As an animal moves, the hind legs have the ability to enter a handmade print and overprint it, but we have found no evidence of this at these Korean sites.
This is also not due to poor conservation, as these fossils are spectacular, they also have fine details of preserved soles and foot scales. The researchers named the new Batrachopus grandis track, emphasizing the larger size than the much older, shorter 2-3 cm long Batracopus-type tracks, commonly found in the Jurassic of North America.
No one expected such a large binary crocodile. The Jinju formation is very rich in clues; You can read all of ecology, said Professor Martin Lockley of the University of Colorado. Some of the oldest terrestrial adapted crocodile remains contain large species that survived more than 200 million years ago (Triassic period).
And some paleontologists think they may be bipeds. Dr. The Korean pathways test this hypothesis, at least for the Cretaceous period, said Romilio. It also shows that this adaptation was effective for millions of years, even with large, ferocious dinosaurs moving. The study was published in the journal Scientific Reports. Scientists are surprised to learn that some ancient crocodiles may have moved about two feet. The evidence comes from beautifully preserved fossil footprints in South Korea.
About a hundred of these 18 to 24 cm long indentations were omitted, which were probably sedimentary sediments that surrounded a lake in the early Cretaceous 110-120 million years ago. The international team behind the discovery say it will likely challenge our perception of crocodiles. People perceive crocodiles as animals that not so much that they live all day on the banks of the Nile or along the rivers in Costa Rica.
No one automatically thinks that I wonder what this [creature] would be if it were biped and ot an ostrich. He can walk like Rex, ”Martin Lockley, a professor at the University of Colorado, USA, told BBC News. The study is sure to spark a lively debate. Not all researchers will necessarily accept the team’s interpretation. Pro Lockley and his colleagues have assigned Batrachopus grandis to the animal that made the tracks, although none of its physical remains have yet been exposed.
Acceptance of the creature’s existence depends only on the fossil impression. These look very similar in shape, albeit to those created by the Batrachopus crocodile, which lived in the Jurassic millions of years ago. Except those old animals were clearly quadruple: they used to walk on all fours. Pro Lockley claims that the binomial interpretation is the only explanation for the new Korean fossil tracks.
“We can see all the marks, all the furrows on the skin, as if looking at the hands,” he explained. They put one foot in front of the other, they can pass a full test by running in a straight line. And there are no footprints in front. Professor Kyung Soo Kim, team leader from South Korea’s Chinju National University of Education, said the depth of impressions Eddy made supports the idea of a more honest stance. “Our paths look very narrow, more like a crocodile balancing on a tightrope,” he said.
When combined with the lack of traction marks on the tail, it was clear that these organisms were moving bipolarly. They moved in the same way as many dinosaurs, but the tracks were not made by dinosaurs. Dinosaurs and their bird lineages walk on your toes. Crocodiles walk on the soles of their feet, producing clear heel impressions, just like humans do. The new prints also help reinterpret a track from South Korea and other collaborators described eight years ago. In 2012.
The group thought there might be a set of less well-defined and slightly smaller indentations known to large versions of flying reptiles known as pterosaurs. These animals are widely recognized as bats when placed on the ground with their hands and feet. However, this enigmatic clue had been seen to be bipolar, perhaps the result of a ducky fainting through the water with its feet in contact with sediment.
Pro Lockley thinks this track was also probably a bipedal Batrachopas. Professor Phil Manning was not part of the Discovery Team at the University of Manchester, UK. As an expert on fossil pathways, he described the prints as “very interesting” and welcomed their publication to start a discussion, but doubted the interpretation.
“For me the tracks do not conform to the general geometry of a crocodile and it is capable of producing,” he told the BBC. Watch any video of live crocodiles and spin your feet as they gallop: It is outward, not toward the midline of the road. Just from its orientation, it makes me look like some kind of dinosaur footprint maker. But is it a crocodile? Unfortunately, we have no fossils to tell us.