Gerontology Research Group
Longevity claims are unsubstantiated cases of asserted human longevity. Those asserting lifespans of 110 years or more are referred to as supercentenarians. Many have either no official verification or are backed only by partial evidence. Cases where longevity has been fully verified, according to modern standards of longevity research, are reflected in an established list of supercentenarians based on the work of organizations such as the Gerontology Research Group (GRG) or "Guinness World Records". This article lists living claims greater than that of the oldest living person whose age has been independently verified, Kane Tanaka at , and deceased claims greater than that of the oldest person ever whose age has been verified, namely Jeanne Calment who died at the age of 122 years, 164 days. The upper limit for both lists is 130 years.