Wouldn't work as well, because the differences between members of the same evolutive branch are too strong to name them the same when scientific study is a purpose. The main problem is, as Chronix (I believe) mentioned some tens of pages ago, that you are assuming that taxonomy studies advanced the same way in their world as ours; however, the key difference that when a Pokémon evolves its structure can vary completely (Bronzor, Clamperl, to mention some examples) means that while in our world we classify down to the species as the item of "least significant difference", in their world each evolutive stage is the item of "least significant difference" as well. That's why, I'd guess, we went with "branchux stageis" naming schema instead. So I'd stay with that scheme for binomial names; it just doesn't strike me that their scientists would rationally choose a schema like ours.
It is called metamorphosis. A tadpole/caterpillar/leptocephalus are the same species as the frog/butterfly/eel they turn into. The objective of taxonomy (and cladistics) is to classify species, and changing species as something grows up, well, doesn't make much sense. True, we don't have to assume taxonomy evolved in the same way as it did in the real world, but, c'mon, all this is an attempt to make the series seem biologically more realist. You cannot say that species change if, as it is seen in most articles, evolution is not glowing white and changing shape, but it is something more gradual.
What species is a flowering Oddish with a widening mouth and the beggining of what will be 2 arms, then? If they are separate species, it is taxonomy even more awkward that what we have over here.
The different stage names, are more like common names for different stages of development. I see no reason to wreck taxonomy arround them, if it has to be used.
As for Egg groups, they overlap, you can belong to different ones, and have quite different Pokemon inside them, yet there are also similar things that do not belong in the same. No way that thing is an equivalent of genus. I'd say egg groups have compatible reproductive systems, but pretty much that's it.
edited 15th Nov '10 11:09:06 PM by Eriorguez