It took decades, but scientists may have finally found the first chicken on the earth.
In 1993, it began on Vega Island, where there is a hilly cold -moving rock off the South Antarctic Peninsula. Rune -sized divingbirds, mainly unrested skeletons, appeared 68 million years ago from rocks before the extinction of dinosaurs. The species named Vegavis IAAI by a scientist presented a puzzle. What kind of bird was it?
Almost 20 years later, in the 2011 Antarctic expedition, a bird's skull that matched Vegabis Iii was recently discovered. An analysis published on Wednesday in Nature magazine suggests that researchers stick out their heads and that the mysterious galid birds are the oldest modern birds, the old -fashioned parent of today's garde and duck. I am.
Christopher Torres, an old -time student and author of the University of Ohio, stated: But he acknowledged that “it also makes it very controversial.”
In the past few decades, Dr. Torres has been looking at bird genomics, the shock of the asteroids that may probably wipe out non -bird dinosaurs, with several modern birds, especially those of water birds and games. He suggested that he had appeared earlier. However, before Vegavis was discovered in the 1990s, no characteristic fossils were identified, and there was a gap between molecular data and physical evidence of rocky rocks.
The mixture of the old -style and modern skeletal characteristics in the original Vegavis specimen was difficult to place, and the Chose Brown Stein, a second -handed student at Yale University, was not involved in research. Some researchers have suggested that Vegabis could be one of the extinction middle -aged birds that did not survive the extinction of the Cretaceous. Others believed that it was a modern bird, close to runes, graves, and gangs.
The skull discovered in 2011 helped violate Logjam in the past history.
New dissertation researchers have created almost complete three -dimensional reconstruction of the bird's head. Dr. Torres suggests that Vegabis has a beak and brain shape without modern bird teeth and brain. Discovered the characteristics of the skull. However, there is a foolish part here -the skull is completely different from a living ducks and gangsters. The beak was long and sharp. There was a large gland to remove salt from the body, and there were powerful chin muscles that could quickly snap the chin into the water.
The whole skeleton pointed to a pigeon bird in the water after the fish, and Dr. Torres said that he promoted himself with a powerful kick foot. Unlike modern waterfowl, “and it's much similar to what we saw in modern runes and graves.”
Despite the bird's Rooney Body Plan and the head, the details of the skull, including their chin and beaks, indicate a specific characteristics that suggest a waterfowl.
Brown Stein called Vegabis's discovery “exciting”, but to solve the discussions on animal identity and clarify when a bird system like a bird system appeared. I am not convinced that it is enough. But even the most conservative interpretation of the skull indicates that modern birds and their closest teeth, the closest teeth, have been very anatomical at the end of the Cretaceous. Ta.
Others are more enthusiastic.
The fact that birds with such modern characteristics were by the end of the dinosaur reign, suggesting that there is a high possibility that there are other major lines of living birds. -Alvarales Herrera said he was Al Entrosy, an old -fashioned student at the Argentine Museum of Bernardo, Riverdavia, and Natural Science. I am not involved in this study. Further exploration may discover that the ancestors of ostrich, chicken, neobes, and duck may have walked around with non -Vian dinosaurs.
