The Echo Points of Biological Memory are based upon the transient triple organism state when a woman is pregnant. For about four months before delivery a pregnant women carries the next generation and the one after that. This is due to the fact that a female baby in the womb also carries the cells of the next generation.
With that perspective the age of memory extends back in two stages. The First Echo Point of Biological Memory extends back to when ones maternal grandmother was in the womb.
The Second Echo Point of Biological Memory extends back to when your maternal grandmother's first cell arrived on planet earth.
Remember four months before anyone is born they are united by three generations in one body, thus in effect one organism.
A great illustration is with US President Barack H. Obama. Mr. Obama's triple phase period lasted from about June 29, 1942 until November 29, 1942, because that is when his first cell was united to his mother and maternal grandmother: Stanley-Anne and Madelyn.
Since Barack Obama's first cell was in cellular communion with Madelyn Lee Payne, Obama has a connection to her and a kind of biological memory rights that go back to 1897, when William McKinley was the US President.
The first Echo Point of Biological Memory runs though his mother which dates to her first triple phase period which ran from about June 26, 1922 unto October 26, 1922.
The second Echo Point of Biological Memory runs through his maternal grandmother which dates to her first triple phase period which ran from about February 7, 1897 until May 7, 1897.