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Re: Paradoxically temporal

In a message dated 7/23/98 8:34:00 AM Eastern Daylight Time,
Steve.Tomporowski@us.ms.philips.com writes:

<< The phylogenetic species concept would argue that the ancestral species
goes extinct upon speciation, even if one of the daughter lineages is
indistinguishable from the ancestral lineage. >>

If a lineage is *indistinguishable* from its ancestral lineage, on what basis
is it identified as a *daughter* lineage?