Wild Horse Arroyo, location of the Folsom Site
Between about 10800 BCE and 10200 BCE, a group of people lived throughout much of central North America. These Paleo-Indians left enough artifacts that archaeologists were able to recognize that their culture was distinct from that which came before them, and that which came after. The discovery of Folsom artifacts, particularly those first found at Wild Horse Arroyo, are significant enough to site have been called the "discovery that changed American archaeology."
It took early scientists quite a while to figure out what they were finding. Biblical tradition asserted that the world was created 6,000 years ago. Beginning in the middle of the nineteenth century, advances in geology and paleontology began to challenge that date. European discoveries of human bones and artifacts in association with extinct Pleistocene mammals proved that human beings existed side by side with Ice Age mammals. However, most scientific experts thought that humans had been in North America for only a few thousand years. Ales Hrdlicka and William Henry Holmes of the Smithsonian Institution suggested that no one was in the Americas 3,000 years ago. Any scientist who advocated a longer antiquity for inhabitants of the Americas risked being blackballed from academia.
Carl Schwachheim, left, and Barnum Brown are examining the first Folsom point found in situ, circa 1927. Jesse D. Figgins snapped the photo. (Courtesy of the Denver Museum of Nature and Science)
In 1922, two amateur naturalists, a Raton blacksmith named Carl Schwachheim, and a banker named Fred Howarth visited a section of Wild Horse Arroyo where a cowboy named George McJunkin had discovered extremely large bison bones after a monsoon in August of 1908. McJunkin had recognized that these bones were not from modern bison, and had tried to interest paleontologists in the site, but hadn’t been able to convince anyone to visit the site before he died in 1922.
Schwachheim and Howarth collected bones and took them to Jesse Figgins, director of the Denver Museum of Nature and Science, and to paleontologist Harold Cook. Figgins and Cook were already proponents of human antiquity in the New World. Cook had found a human tooth among the bones of extinct mammals at Snake Creek in Nebraska in 1922. Two years later, excavators at Lone Wolf Creek in Texas reported to Figgins that they had found three projectile points associated with a bison skeleton. However, since Schwachheim and Howarth had presented nothing but bison bones to Figgins and Cook, the two scientists didn’t believe there was anything significant about the site in Wild Horse Arroyo.
Schwachheim and Howarth collected bones and took them to Jesse Figgins, director of the Denver Museum of Nature and Science, and to paleontologist Harold Cook. Figgins and Cook were already proponents of human antiquity in the New World. Cook had found a human tooth among the bones of extinct mammals at Snake Creek in Nebraska in 1922. Two years later, excavators at Lone Wolf Creek in Texas reported to Figgins that they had found three projectile points associated with a bison skeleton. However, since Schwachheim and Howarth had presented nothing but bison bones to Figgins and Cook, the two scientists didn’t believe there was anything significant about the site in Wild Horse Arroyo.
In 1926, v Schwachheim, and Howarth took Figgins and Cook to the Folsom site. They began excavations, with the intention of collecting full skeletons of bison antiquus to take back to the museum. But on August 29, 1927, they found man-made stone projectile points in the same layers, and therefore of the same age as, the bison bones. Other archaeologists were invited to see the findings in situ and they agreed that the bison bones and the spear point were contemporaneous.
However, no one could pinpoint when bison antiquus had lived. At a December 1927 meeting of the American Anthropological Association, archaeologists speculated that the evidence from the Folsom site suggested that man had arrived in the New World 15 to 20 thousand years ago. Speculation about the exact antiquity of Folsom continued until radiocarbon dating came into use in the 1950s and the bison bones at the site could be dated more precisely. Even without an exact date, the Folsom point demonstrated conclusively that human beings were in North America during the last ice age—thousands of years earlier than Hrdliča's 3,000-year limit. Hrdlička, angry at having his theory criticized, managed to make Figgins and Cook were not invited to any of the seven academic symposia devoted to American antiquity which took place from 1927 to 1937.
The points Figgins and Cook discovered at the Folsom Site in Wildhorse Arroyo were distinctive. Figgins called the culture which created these points the Folsom Culture, named after the small town of Folsom, New Mexico which was nearby. Soon after the Folsom Culture was discovered, an earlier group, the Clovis Culture, was found. Folsom projectiles have a concavity running down their center that Clovis projectiles did not have. Statistical analysis of radiocarbon dates suggest that the earliest Folsom dates overlap with the latest Clovis dates, so the two technologies overlapped for multiple generations. This points to Folsom Culture being an outgrowth of Clovis Culture. It might be that the extinction of most species of megafauna marks the boundary between Clovis and Folsom Cultures. Clovis artifacts are associated with mammoth bones, while Folsom people hunted Bison antiquus, which became extinct about the same time that Folsom evolved into cultures relying on greater dependence on smaller animals and plant foods. It is unknown whether the extinctions of megafauna were caused by climate change or by over-hunting, or both.
The points Figgins and Cook discovered at the Folsom Site in Wildhorse Arroyo were distinctive. Figgins called the culture which created these points the Folsom Culture, named after the small town of Folsom, New Mexico which was nearby. Soon after the Folsom Culture was discovered, an earlier group, the Clovis Culture, was found. Folsom projectiles have a concavity running down their center that Clovis projectiles did not have. Statistical analysis of radiocarbon dates suggest that the earliest Folsom dates overlap with the latest Clovis dates, so the two technologies overlapped for multiple generations. This points to Folsom Culture being an outgrowth of Clovis Culture. It might be that the extinction of most species of megafauna marks the boundary between Clovis and Folsom Cultures. Clovis artifacts are associated with mammoth bones, while Folsom people hunted Bison antiquus, which became extinct about the same time that Folsom evolved into cultures relying on greater dependence on smaller animals and plant foods. It is unknown whether the extinctions of megafauna were caused by climate change or by over-hunting, or both.
Although the Folsom culture is associated with the kill site in Northern New Mexico, it flourished over a large area on the Great Plains, in what is now both the United States and Canada, eastward as far as what is now Illinois and westward into the Rocky Mountains. There is even one Folsom site in Mexico, across the Rio Grande River from El Paso, Texas.
In the Shadow of Sunrise, Jennifer Bohnhoff's middle grade novel about the Folsom People in what is now New Mexico, Texas and Colorado will be published by Kinkajou Press, a division of Artemesia Publishing in April 2. It can be preordered in ebook and paperback here.
