Doesn't now. The turmoil in taxonomy (which can also be seen on enWP) has led to many alternative classifications. This turmoil is going to last for another 20 years, in my opinion. It is caused partly from the move from Linnaean to cladistic principles, and partly by the use of DNA sequence data in taxonomy. An example is: the way derived groups like birds should not be classified at the same level as the group they evolved from. Yet birds have traditionally been a class under the Linnaean system.
The turmoil sometimes results in differences between related pages, which sometimes rely on different references and different authors' opinions as to the present best arrangement. When I put up taxonomic pages here, I always check with enWP, because they have more specialists than we do; but their classifications also reflect the varied opinions of professionals at the present time. Macdonald-ross (talk) 05:10, 10 March 2012 (UTC)