The article describes the crown eukaryote group as a crown group and links to that article. But even if the concept had been correct, it would not have been a crown group in the sense the phrase is used today: the most exclusive clade comprising all the group's extant members. Since there were extant eukaryotes that were outside the crown eukaryotes, the latter can't have been the a crown clade, which would have excluded only some extinct eukaryotes. Cephal-odd (talk) 04:49, 27 September 2009 (UTC)