The quote is irrelevant, it's taken from a section about radiocarbon dating which wasn't used here. They used Uranium series dating which according to your own

The quote is irrelevant, it's taken from a section about radiocarbon dating which wasn't used here. They used Uranium series dating which according to your own source: > The uranium-thorium method is often helpful for dating finds in the 40,000- to 500,000-year-old range, too old for radiocarbon but too young for K-Ar or Ar-Ar.