Of or involving the cells of an organization or movement: The assessment of opposition to any totalitarian regime ... is notoriously difficult, for any effective movement must be secretive and cellular (Anthony Sampson). 4. Of or relating to a cellular telephone.
In the past, a human generation has been considered to be 20-25 years. Older genealogical documents will use these numbers. However, genealogical studies have revealed that this is too simplistic and can result in large inaccuracies during statistical calculation.
Unless those generations are only 6 years long, these verses indicate that humanity has been around much longer than 6,000 years. In most instances, a biblical generation is ~40 years long, 14 meaning that human beings have been around for at least 40,000 years.