A small group of volunteers update the tree from time to time. Check the bottom of the respective page. "Contact People for Haplogroup I: Phil Goff and Charles Moore" http://isogg.org/tree/ISOGG_HapgrpI.html -- Aaron ________________________________ From: Tony Bardy <tonybardy@gmail.com> To: y-dna-haplogroup-i@rootsweb.com Sent: Monday, 5 March 2012, 14:31 Subject: Re: [yDNAhgI] Z73 SNP test Thanks Ken, I have e-mailed  ISOGG asking what was the criteria used for placing z73 there. I hope they reply... Best regards, Tony Bardy