Species‐level taxonomy derives from empirical sources (data and techniques) that assess
the existence of spatiotemporal evolutionary lineages via various species “concepts.” These …

Recent excitement over the development of an initiative to generate DNA sequences for all
named species on the planet has in our opinion generated two major areas of contention as …

The species problem has triggered the publication of an almost infinite number of theoretical
and practical studies, including quite a number of books. I should, therefore, perhaps briefly …

Speciation, the process through which new species come into being, is one of the central
topics of evolutionary biology. It links the great fields of micro-and macroevolutionary biology …

The evidentiary basis of the currently accepted classification of living amphibians is
discussed and shown not to warrant the degree of authority conferred on it by use and …

The fish faunas of continental South and Central America constitute one of the greatest
concentrations of aquatic diversity on Earth, consisting of about 10 percent of all living …

The long-awaited revision of the industry standard on phylogenetics Since the publication of
the first edition of this landmark volume more than twenty-five years ago, phylogenetic …

Subspecies have been considered artificial subdivisions of species, pattern classes, or
incipient species. However, with more data and modern phylogenetic techniques, some …

▪ Abstract Species are routinely used as fundamental units of analysis in biogeography,
ecology, macroevolution, and conservation biology. A large literature focuses on defining …

The known diversity of dart-poison frog species has grown from 70 in the 1960s to 247 at
present, with no sign that the discovery of new species will wane in the foreseeable future …