!Finding 130,000-year-old teeth of a child of an extinct species of humans
In the jungles of Laos, China, a baby tooth was found, and this may be the only molar ever found, belonging to a species of humans that we know little about.
"Analysis of the internal structure of the molar, together with that of the right of the tooth, suggests that it may have been derived from a pubescent child of the genus Homo," researchers wrote in a new study.
The researchers add: "The tooth was found in a cave (Tam Naha Hau 2) and it most likely represents a Denisovan, an extinct species of humans that was first discovered when the finger bone of a child found in a Siberian cave in 2008 was analyzed and did not correspond to that time. any known human species.
Here, it can be said from the recent specimens roughly back in time to about 200,000 years ago, that Denisovans share close genetic similarities with Neanderthals.
Despite this, the discovered samples were very small, as six teeth and fossilized bones were discovered in the same cave in Siberia, while one molar was found in a cave in China, so the discovery of one of the possible Denisovan teeth in Laos (the far south of Siberian caves). or China) is very exciting for researchers.
Since the molar was only recently fully developed (at the time of the individual's death), the team believed the tooth was from a child between 3.5 and 8.5 years old (at the time of the individual's death), and using the deposits that were around the tooth they dated the tooth to between 164 and 131 A thousand years ago.
Fortunately when it comes to ancient single teeth, it is not easy to be sure that they are Denisovans, as the team was unable to sample ancient DNA due to the age of the sample, in part due to tropical conditions that may have destroyed any trace. The DNA is thousands of years old, but by analyzing the proteins' age along with their shape, the team is pretty sure it's Denisovans and there's still some possibility that it might have been Neanderthals.
Denisovans have lived in a wide range of environments and latitudes and were able to adapt to extreme conditions, from the cold mountains of Altai (Russia) and Tibet to the tropical forests of Southeast Asia, and when it comes to future research, scientists are still curious about the mechanism of tooth entry The cave and the presence of any human activity in the cave.
Source
https://www.arageek.com/news/this-could-be-the-first-evidence-on-earth-of-a-standard-candle-supernova-explosion-2?fbclid=IwAR2j-OJK-Ro5naabkYPUdUXMmXPiRl_iVE1R8uJ3VmTSzQeFpyMc_DIZang