Like mythological beasts from some Ray Harryhousen film, these giant vultures as a group went extinct at the end of the Pleistocene, possibly from the reduction in large carcasses due to megafaunal extinctions. Teratorns were related to condors, but were much larger usually. Three species were found as fossil in the western United States, and the above form, Merriam's teratorn (Teratornis merriami) was distributed in California, southern Nevada, Arizona, and Florida. It had an incredible wingspan of 11 to 14 feet. The extant California condor (Gymnogyps californianus) has a wingspan of 9 feet.