Programming language evolution

Someone pointed me to this programming languages evolution chart. It's pretty interesting, and it's kind of funny to see which languages he considers to be not under active development. If you were to read it at face value, you'd think the only languages are still alive Tcl, Fortran, Delphi, Python, Java, Ruby, php and Perl. I'm amazed I've never heard of this O'Caml thing. Also I recently glanced at the Groovy scripting language which is built on top of Java, but designed to be more flexible and agile like Python or Ruby. Groovy has some pretty interesting feature, of course I'm kind of a programming language geek.