New york dating plant

This earliest evidence of Artemisia showed up on the Tibetan Plateau near Qinghai Lake, a location about 10,700 feet (3,260 meters) above sea level. While the researchers didn't find any Cannabis pollen dating to 28 million years ago, they did find 28-million-year-old pollen from Artemisia, another genus of steppe plant that grew abundantly alongside Cannabis millions of years later. But Cannabis diverged from Humulus around 28 million years ago, suggesting that it might have originated somewhere else, the study authors wrote in the new study.