Around 10,400 years before present (YBP), the paternal lineage of E-Y2863 took shape as it diverged from the common ancestor E-V12 branch.
The most recent common ancestor (TMRCA) of this branch is estimated to have been born around 9,800 years before the present (YBP).
See it on 
YTree
SNPs
Currently defining this branch
CTS154, CTS2163, CTS6839/CT6839, CTS7136, CTS9007/V3331, CTS9249/Z1225/V3490, CTS5646, Y2863/FGC7692/SK869/V2121
Samples
Within our knowledge, E-Y2863 is the ancestor of 79 Somali samples.
Sub-branches
83 sub-branches with Somali samples