[link|http://www.groklaw.net/article.php?story=20040620053051348|Peter H. Salus & Eric Levenez Correct SCO's UNIX Chart]
[link|http://www.levenez.com/unix/|Eric Levenez's UNIX timeline]
Take a look at the 1984-1986 area in SCOs trash: [link|http://www.sco.com/scosource/unixtree/unix.page.05.html|The GREEN LINE is wrong]
Compare that to: [link|http://www.levenez.com/unix/page05.gif|The Original]
There are many other things wrong with the version Ben showed you.