Re: Species concepts

["Brad McFeeters" <archosauromorph2@hotmail.com>]

> From: "T. Michael Keesey" <mightyodinn@yahoo.com>
> Reply-To: mightyodinn@yahoo.com
> To: Mailing List - Dinosaur <dinosaur@usc.edu>
> Subject: Re: Species concepts
> Date: Wed, 17 Mar 2004 16:18:35 -0800 (PST)
>
> --- Brad McFeeters <archosauromorph2@hotmail.com> wrote:
> > Has anyone introduced a system similar to the following?
> >
> > Fertile offspring = same species
> > Infertile offspring = different species of same genus
> > No offspring = different genera
> >
> > I don't know how much it would alter existing classifications, but 
> having
> > some objective definition of genera would be good.
>
> The problem here is: suppose A can breed with B, and B can breed with C, 
> but A
> cannot breed with C. Is B in the same species as A or C?
>
> (Not to mention the inapplicability to asexual organisms.)

Sure, but those are problems with the Biological Species Concept in any 
form, not just of the "Biological Genus Concept".

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