What’s the model for them decide when to say a new species has been found, rather than just a variant of a known species?
Or more generally, whats the generation of a species? It can’t be just whether they can produce offspring together because some different species has been shown to produce viable offspring.
Or more generally, whats the generation of a species? It can’t be just whether they can produce offspring together because some different species has been shown to produce viable offspring.