An ancient bone is helping scientists refine the timeline of humanity's relationship with our best friends – the canine companions that have brightened our lives for millennia.
The cracked bone that may refine the domestication history of dogs.
A team led by geneticist and anthropologist Montserrat Hervella of the University of the Basque Country in Spain employed a number of techniques to analyze the Eralla bone. First, there was the radiocarbon dating, a technique that relies on the decay time of an isotope of carbon generated in Earth's atmosphere and absorbed into living tissue. This narrowed down the time since the animal last lived and breathed.
Then, they used genetic and morphological analyses to figure out the species. This confirmed that the owner of the bone was– a domesticated dog. Moreover, it shared mitochondrial lineage with the other Magdalenian dogs, from Gironde and Bonn-Oberkassel., around 22,000 years ago, when extreme cold dominated the globe, creating living conditions that the word"harsh" doesn't even begin to cover.
"These results raise the possibility that wolf domestication occurred earlier than proposed until now, at least in western Europe, where the interaction of Paleolithic hunter-gatherers with wild species, such as the wolf, may have been boosted in areas of glacial refuge during this period of climate crisis,"The dating of the bones also gives us a significant crossover with dog-like wolves.
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