![]() ![]() Illustration showing a close-to-hatching oviraptorosaur dinosaur embryo based on the new specimen found in southern China. “This indicates that such behaviour in modern birds first evolved and originated among their dinosaur ancestors,” said Ma.Īn alternative to tucking could have been something closer to what is seen in modern crocodiles, which instead assume a sitting posture with the head bending upon the chest up to hatching. Chicks preparing to hatch tuck their head under their right wing in order to stabilise the head while they crack the shell with their beak.Įmbryos that fail to tuck have a higher chance of death from an unsuccessful hatching. In birds, the behaviour is controlled by the central nervous system and called “tucking”. Ma and colleagues found Baby Yingliang’s head lay below its body, with the feet on either side and back curled – a posture that was previously unseen in dinosaurs, but similar to modern birds. “It is one of the best dinosaur embryos ever found in history,” Fion Waisum Ma, a University of Birmingham researcher who co-authored a paper in the journal iScience, told AFP.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |