During the excavations, it is often possible to find pieces of glassware, other utensils, weapons and elements of dishes, but with the remains not so simple. To detect a whole skeleton or even a sufficient number of its fragments is much more difficult. Therefore, to study the DNA of ancient people is not always obtained. To solve the problem, German researchers began to search for new ways of detecting DNA, and, I must say, succeeded.
Scientists have decided to find out whether DNA can survive in the sediments found in excavation sites. To conduct the experiment, they collected samples from excavations of sites of ancient people found in France, Croatia, Spain and Russia, as a result of which samples were from 14,000 to 500,000 years old.
Further studies of microscopic particles helped to identify and recover fragments of mitochondrial DNA, which were then analyzed. It was possible to find out that the fragments belong to twelve families of mammals, including mammoths, cave hyenas and a whole series of animals. Eight samples belonged to Neanderthals, and one was close to the denisovtsu.
The method is good because the deposits do not need to be stored under certain conditions, so they can completely retain DNA inside themselves even at room temperature. Therefore, scientists engaged in a detailed study of a new way of detecting DNA in rocks, then to be able to apply it to excavations everywhere.