Category talk:Cretaceous mammals

Limitation to lowest taxonomic classes?
Would it be useful to add a sentence at the beginning to say that the only taxanomic classes to be listed here should be genus and below? Or perhaps it might be better to create subcategories "Cretaceous mammal classes of genus and below" and "Cretaceous mammal classes of family and above". Thoughts?Anythingyouwant (talk) 00:09, 3 August 2011 (UTC)