The study, published in the journal Science Advances, is based on an analysis of the skulls of 92 individuals who lived in the Americas between 13,000 and 3,000 years ago. The researchers used a variety of techniques to measure the skulls, including 3D scanning and geometric morphometrics.
The results of the analysis showed that the skulls of the early Americans could be divided into two distinct groups. The first group, which the researchers called the "Paleoamericans," had skulls that were similar to those of the people who lived in Siberia and East Asia. The second group, which the researchers called the "Neoamericans," had skulls that were similar to those of the people who lived in Polynesia.
The researchers believe that the Paleoamericans crossed the Bering land bridge during the last Ice Age, when the sea levels were lower and the land bridge was exposed. The Neoamericans, on the other hand, are thought to have come to the Americas by boat from Polynesia.
The study provides new evidence for the complex history of human migration to the Americas. It also suggests that there were two distinct groups of people who lived in the Americas before the arrival of the Europeans.
Here are some additional details about the study:
- The researchers analyzed the skulls of 92 individuals who lived in the Americas between 13,000 and 3,000 years ago.
- The skulls were from a variety of sites in North, Central, and South America.
- The researchers used a variety of techniques to measure the skulls, including 3D scanning and geometric morphometrics.
- The results of the analysis showed that the skulls of the early Americans could be divided into two distinct groups.
- The first group, which the researchers called the "Paleoamericans," had skulls that were similar to those of the people who lived in Siberia and East Asia.
- The second group, which the researchers called the "Neoamericans," had skulls that were similar to those of the people who lived in Polynesia.
- The researchers believe that the Paleoamericans crossed the Bering land bridge during the last Ice Age, when the sea levels were lower and the land bridge was exposed.
- The Neoamericans, on the other hand, are thought to have come to the Americas by boat from Polynesia.
- The study provides new evidence for the complex history of human migration to the Americas.
- It also suggests that there were two distinct groups of people who lived in the Americas before the arrival of the Europeans.
