I guess it doesn’t make a lot of sense that I shied away from the leaf illustration when I keep using animals everywhere. It was just so hard to keep illustrating the concepts of life without using any real life forms. Although, when I did come up with a good symbolic visual metaphor for stuff, it was usually very satisfying. While I spent a long time doing the drawing for all the bottom-feeders I probably spent just as much time thinking about and brainstorming the smaller panels. The last little panel is a shout-out for Isaac!
Hybrid Vigor 
Hi James,
I am Hunter Paalman, one of your Kick Starters of yesteryear. I was browsing one of my favorite sites, The Resilient Earth, and thought that you might be interested in accessing the book of that name in pdf form. The distribution similarity is what sparked the thought. I read their ( Hofmann and Simmons ) book and enjoyed it as II’m sure you will too, perhaps as a break from your evolution activities. Visit: http://theresilientearth.com/files/table_of_contents.html and enjoy.
HHP
Thanks for the heads-up, I just took a look and it’s cool, though it’s a shame you can’t download all the chapters together in a single PDF.