Scientists at the University of Manchester and the University of Bristol have looked into the skeletons of some of our oldest relatives of vertebrates with strong X-rays and solved a 160-year-old mystery about the origin of our skeletons. [19659002LebendeWirbeltierehabenSkeletteausvierverschiedenenGewebetypen:KnochenundKnorpel(dieHauptgewebeausdenenmenschlicheSkelettebestehen)DentinundSchmelz(dieGewebeausdenenunsereZähnegebautsind)DieseGewebesindeinzigartigdasiebeiihrerEntwicklungmineralisiertwerdenwasdemSkelettFestigkeitundStarrheitverleiht
evidence of the early development of our skeletons found in a group of fossil fish that Straight tracing called and lived about 400 million years ago. These fish include some of the oldest vertebrates with a mineralized skeleton ever discovered. From which tissues do heterostrone skeletons exist? Scientists have long puzzled over it.
A team of researchers from Manchester University, the University of Bristol and the Paul Scherrer Institute in Switzerland has now used synchrotron tomography to give a detailed insight into heterostrotic skeletons: a special kind of CT scanning with very high energy X-rays is generated by a particle accelerator. The team used this technique to identify this mysterious tissue.
The lead researcher Joseph Keating of the Manchester School of Earth of Environmental Scientists said, "Heterostrakic skeletons are made of a really weird tissue called Aspidin, which is criss-crossed. 0 / index.html Scientists have been wondering for 1
The results of this study, published in Nature Ecology and Evolution show that the tiny tubes are cavities that originally contained fiber bundles of collagen, a type of protein in the skin and bones.
These findings enabled Dr. Keating, excluding anything but a tissue identity hypothesis: Aspidin is the earliest evidence of bone in the fossil record.
Co-author, Professor Phil Donoghue of the University of Bristol concludes: "These discoveries chan our view of the evolution of the skeleton." Aspidin was once considered a precursor of inherited mineralized tissues. "We show that it is actually a type of Bones act and that all these tissues must have evolved millions of years earlier. "