This is very cool.  Going back 166 million years to see each of the branches where we share common mammalian ancestors.  The PDF

is available for download, and is very detailed.  You need to zoom a long way to even see that there is text naming each of the known mammals in existence today.  It's a radial family tree that also represents a timeline as you move outwards from the center.  Here we are:

ABC TV in Australia did a short video on the family tree hosted by Dr. Paul Willis, and he literally walks around the infographic describing different parts.  Well done, and seemed very reminiscent of Carl Sagan in some of his shows.  The video credits Robin Beck, a Mammalian Systematist as the University of NSW, of creating the family tree.  Here's the link to the ABC page where you can watch the video, or you can click on the image below.

Thanks for the link Alwyn!  Great find!