动物模型 z-bo 2020-09-09 440

　　Researchers use simulated robots to study the movement of prehistoric animals. Research on robots and simulated skeletons shows that the prehistoric tetrapod learned to walk efficiently on land earlier than previously expected, and it was concluded that the development of efficient land on land preceded the development of amniotic animals (reptiles, birds and mammals) Evolution and differentiation.

　　Various evolutionary adaptations have promoted the transformation of tetrapods from aquatic to land walking. Among them, amniotic animals differentiate rapidly and have been associated with more efficient upright walking. However, the timeline for the development of this more advanced exercise method has been unclear.

　　Researchers from the Humboldt University of Berlin, Germany and the Swiss Federal Institute of Technology Lausanne have studied the fossils of Orobates, a large herbivorous quadruped. It lived about 290 million years ago and has a close relationship with amniotic animals. Its fossils match the preserved footprints, and its movement and gait can be understood from it.

　　The researchers comprehensively analyzed the fossil and its footprints, as well as the measurement results of 4 existing amphibians and reptiles, and used digital technology to reconstruct Orobates and a simulated robot called "OroBOT" to explore various possibilities The rationality and effectiveness of walking. Through these studies, it is found that compared with general non-amniotic quadrupeds, Orobates may be more inclined to walk upright, which indicates that the evolution time of advanced exercise methods may be earlier than previously expected.