Around 13,200 years before present (YBP), the paternal lineage of E-Z1902 took shape as it diverged from the common ancestor E-M78 branch.
The most recent common ancestor (TMRCA) of this branch is estimated to have been born around 12,300 years before the present (YBP).
See it on 
YTree
SNPs
Currently defining this branch
CTS256/V1129, Z1902/CTS10890/PF2292, Y6738/FGC2148/Z21150, FGC2150/Y6737(H)
Samples
Within our knowledge, E-Z1902 is the ancestor of 79 Somali samples.
Sub-branches
85 sub-branches with Somali samples