Understanding Ontogenetic Depth, Part I: Naming Versus Measuring

I was supposed to do this a year ago -- well, long before that, too -- but a glacier passed me on the interstate, and then I ran out of gas, got so depressed that I threw my notes into a box, and...oh, never mind. Let's get started.

After the second entry in this series (part II), we'll open up the comments section for your responses. Complete citations and additional reading will also be compiled at the end of part II.

1. Introduction: Why A Biological Distance That's Currently Impossible...