Marcus Dameron's timeline By L3G1TxP1MPx Period: Jun 19, 1998 to Jun 23, 1998 Zygote Period: Jun 27, 1998 to Aug 23, 1998 Embryo Jul 19, 1998 Heart beats regularly. Eyes and ears begin to form. Aug 19, 1998 Heart develops right and left chambers Period: Oct 23, 1998 to Mar 19, 1999 Fetus Dec 19, 1998 Fingerprints form. Dec 19, 1998 Bones are visible. Heartbeat can be heard with a stethoscope. Jan 19, 1999 Eyelids can open and weight can be up to 6.6 pounds. Period: Mar 19, 1999 to Mar 19, 2001 Infancy Oct 19, 1999 Infant begins to crawl. Dec 19, 1999 A baby can hold its head up and reach for objects. Period: Mar 19, 2001 to Mar 19, 2014 Childhood May 29, 2003 1. My sister, Addison was born. Aug 25, 2004 2. I started kindergarten. May 25, 2006 3. I started swim team. Mar 19, 2008 Ovulation in females, and sperm production in males begin. Period: Mar 19, 2008 to Mar 19, 2014 Puberty Jun 30, 2008 4. I started fishing at the beach. Oct 21, 2010 5. I went to the mountains on my first youth retreat. Period: Mar 19, 2014 to Mar 19, 2034 Adolescence Period: Mar 19, 2019 to Mar 19, 2099 Adulthood Mar 19, 2029 Skin starts to become wrinkled. Mar 19, 2029 Aging begins Mar 19, 2059 Aging becomes more noticeable and progresses rapidly