From message #181,
Herepton writes:
Here are some macro-kinds: mankind, birds, quadrupeds, and reptiles.
Could we have a bit of clarification on these "macro-kinds"? What is the full listing of vertebrate "macro-kinds"? The list above does raise the question of why reptiles aren't quadrupeds. Do amphibians get a mention? Are kangaroos quadrapeds in this system? Where do snakes fit in?
Perhaps then such classifications could be tested against the fossil record.