Paleospecies

The problem of recognizing paleospecies is linked to a more fundamental problem in taxonomy —determining how species should be segregated.

Similarly, my main source for confidence about paleospecies arises from proven correspondences with true biospecies in favorable cases providing sufficient information for such a test (particularly when species with lengthy fossil records are still extant).

I do not, of course, argue that all named paleospecies are true biospecies, or that I can even estimate the percentage properly so defined (any more than we know the relative frequency of modern taxa that represent true biospecies).