- Z18 lineage SNP testing and clusters
- Z18* (Z18+ Z14-)
- FTDNA's Z18 haplotree (and SNP Pack?) goofed up
- Z18>S11601 Thread
- Two newly posted subclades (related to Eastern Europe) on YFull's R-L257 tree
- S8387 problematic in R1b-Z18 SNP Pack
- Z18 vs. Z381
- ZP87 tree position
- R-Z375
- R-ZP91 Origin, Spread, and Distribution
- R-Z18 in ancient DNA
- Tartarian Z18
- Y-Full R-FT288677