Frozen bird found to be 46,000-year-old horned lark

Updated: Feb 23, 2020, 08:02 IST | Agencies | London

They also possess the remains of a 50,000-year-old cave lion cub "Spartak", and a partially preserved woolly mammoth, the scientists noted


Scientists have recovered genetic material from the well-preserved remains of the bird horned lark, trapped in frozen Siberian soil, and have found that that the bird is 46,000-year-old, a finding that can help understand how the region transformed at the end of the last ice age when the Earth was largely covered in ice and snow. The study, published in the journal Communications Biology, noted that this region, the mammoth steppe, spread out over northern Europe and Asia during the last ice age, was home to now extinct species such as the woolly mammoth and the woolly rhinoceros.

According to the researchers, including those from Stockholm University in Sweden, this ecosystem was a mosaic of habitats such as steppe grasslands, tundra, and coniferous forest. They said at the end of the last ice age, the mammoth steppe was divided into the habitats we know today -- tundra in the north, taiga in the middle, and steppe in the south. "The genetic analysis also suggests that the bird belonged to a population that was a joint ancestor of two sub species of horned lark living today, one in Siberia, and one in the steppe in Mongolia," said study co-author Nicolas Dussex, a researcher at the Department of Zoology at Stockholm University. Dussex said this information can help scientists understand how the diversity of the bird's sub species evolved.

"Our results support this theory since the diversification of the horned lark into these sub species seems to have happened about at the same time as the mammoth steppe disappeared," said Love Dalen, a co-author of the study from the Swedish Museum of Natural History. The researchers said they currently have access to several samples from similar findings from the same site in Siberia, including an 18,000-year-old puppy called "Dogor", which the scientists are are studying to determine if it is a wolf or a dog. They also possess the remains of a 50,000-year-old cave lion cub "Spartak", and a partially preserved woolly mammoth, the scientists noted.

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