Having made a first stab at mapping NCBI taxa to Wikipedia, I thought it might be fun to see what could be done with it. I've always wanted to get quantum treemaps working (quantum treemaps ensure that the cells in the treemap are all the same size, see my 2006[!] blog post for further description and links). After some fussing I have some code that seems to do the trick. As an example, here is a quantum treemap for Laurasiatheria.