Debating the Connection Between Birds and Dinosaurs

Discussion on the relationship between birds and dinosaurs We live in a world where there must be answers to every question. If there is no answer to this question, someone will decide what the answer is. One problem is that birds have evolved from dinosaurs. Many scientists have theory. There is no clear answer. But I will give you information on some theories the scientists have and information on new discoveries that certainly may be what the scientists around the world are constantly looking for.

According to the Phalanx number (the number of fingers in the finger), the hands of the dinosaurs and the birds are essentially different. The result may challenge the consensus that birds are descendants of dinosaurs, so this is an important and highly controversial field of research. Embryologists and some paleontologists who oppose bird dinosaurs have counted the number of birds for a long time based on many studies on the development of eggs II - III - IV. This is based on the fact that, in most amniotic fluid animals, the number first formed in the hand of five fingers is the number IV, which forms the long axis. Therefore, embryologists determined the long axis of birds as IV and the number of survivors as II - III - IV. The advanced Tetanurae hand fossil seems to have the number I-II-III (some of the genus Abeleroida also has a reduced number IV)

Archeoptery was the first fossil discovered the relationship between dinosaur and bird. It is considered a transient fossil because it shows the characteristics of both groups. Only two years after the birth of Darwin 's revolutionary species, its discovery stimulated a new argument between evolutionary biology and supporters of creationism. This early rising bird is like a dinosaur and there is no clear wing impression on the surrounding rocks At least one specimen is mistaken for Compsognathus. Since the 1990s, more feather dinosaurs have been discovered and provide stronger evidence for a close relationship between dinosaurs and modern birds. Most of the specimens were excavated at the lagerstätte of the Yixian layer of Liaoning Province in northeastern China which is part of the Cretaceous continent.