The Tree of Laurasiatherian Ungulates

Since my last tree (Maniraptors) did so well on the inter-webs (and apparently sparked some discussion), I figured I'd be a bit more... controversial and try something with the hoofed mammals of Laurasiatheria (one of the big mammalian supergroups). These guys are a big area of concern because every cladistic analysis seems to switch them around, and perhaps all of these mammals may not be related to each other. I use the name 'Euungulata' to unite the perissodactyls, artiodactyls, & all of their relatives & descendents. To be safe and not claim any authority, I advice that you USE THIS AT YOUR OWN RISK. References to the trees' origins are at the bottom of the diagram.

I hope this sparks even more discussion, or perhaps inspires more studies, seeing as many of these hoofed mammals are interesting and unique. 

Images from PhyloPic (phylopic.org). References:

David A. Balfour

Heinrich Harder

Scott Hartman

Michael Keesey

Lukasiniho

C. De Muizon

Herbert H. T. Prins

Oscar Sanisidro

Rob Slotow

Nobu Tamura

Steven Traver

Jan A. Venter