120 million-year-old dinosaur fossil with feathers discovered in China

A 120 million-year-old fossil of a two-legged Cretaceous period disaur has been found in China's Jehol province. new finding could shed some light on evolutionary gaps between disaurs and birds. Interestingly, fossil was found about a dece ago but it was t until recently that study began.

study which was published in Anatomical Record revealed that creature h fears on its legs and arms that resembled fears on bird wings. According to study, creature h a bony tail which also h two fears on it. 

120 million-year-old disaur fossil with fears

study revealed that skeleton was preserved lying on its left side on a single bedding plane of finely laminated siltstone. specimen is complete; only some ribs are missing. Fortunately, existing thin ventral ribs and gastralia are numerous, well preserved, and in life position, study stated. However, researchers are still t clear about reason behind fears on tail.

study says, " presence of very long tail fears in an immature disaur may suggest that ir primary functions were t ornamental or were at least unrelated to mating. Even if, unlike many birds, long rectrices grew in a single molt, it is clear that appearance of se features occurred well in vance of somatic maturity and may have preceded sexual maturity."

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According to Ashley Poust, a palaeontologist at San Diego Natural History Museum, fears on legs and arms resembled with ult birds, but it h or features that suggested it was a juvenile. He furr ded that it is very clear that disaurs were growing fears in a different way than modern birds. 

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According to study, "X-ray riography using tritional projection riography and computed axial tomography at Dalian Medical University Hospital was used to test aunticity of specimen because initial preparation was t performed in-house. In order to furr test veracity of fears, rock was prepared away from where it was overlying edges of exposed fears."

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(With inputs from ncies)