Dr Michael Coe in his book “The Maya”, says:
“According to the early sources, the Maya books contained histories, prophecies, maps, tribute accounts, songs, ‘sciences,’ and genealogies” (p. 239). “Far more is known of later Maya priests. … [They] kept the all-important genealogies” (p. 243).
– Bruce E. Dale and Brian Dale – Joseph Smith: The World’s Greatest Guesser (A Bayesian Statistical Analysis of Positive and Negative Correspondences between the Book of Mormon and The Maya)
Bruce E. Dale and Brian Dale observe:
This practice of the priests (religious leaders) carefully keeping genealogies is specific and detailed in both The Maya and in the Book of Mormon. It is also unusual. We know of no contemporary practice or model in Joseph’s Smith’s world that put such emphasis on priests keeping a careful, written, long-term record of one’s ancestors, a record handed down over centuries. Specific, detailed and unusual.
– Bruce E. Dale and Brian Dale – Joseph Smith: The World’s Greatest Guesser (A Bayesian Statistical Analysis of Positive and Negative Correspondences between the Book of Mormon and The Maya)
Where did Joseph Smith get this idea from?
See: