In On the Origin of Species, Charles Darwin proclaimed that “our classifications will come to be, as far as they can be so made, genealogies”. That turned out to be easier said than done. Even as late ...

The Groundplan-divergence Method of constructing phylogenetic trees was created during the 1950's for illustrating systematic principles, but it was taken up widely by researchers carrying out ...

P Skelton, A Smith and N Monks Cambridge University Press, Cambridge, UK; 2002. 80pp plus CD. £29.95, hardback ISBN 0-521-52341-9. There is barely a field of biology that remains untouched by the use ...

Cladistics is one way scientists classify organisms. A cladogram shows the nature of evolutionary relationships that may have occurred, similar to a family tree. You will make a cladogram in this ...

An Interdisciplinary Perspective. Henry M. Hoenigswald and Linda F. Wiener, eds. University of Pennsylvania Press, Philadelphia, 1987. 286 pp. $25. It isn’t often that an analytical technique ...

For centuries, philosophers, naturalists and scientists have been trying to devise systems that group living things according to their similarities and presumed relationships. That's taxonomy the ...

Cladistic and taxonomic treatments of the same plant group usually exhibit a mixture of congruences and incongruences. The question arises in the case of the incongruences as to which version is right ...

Vertebrates used to be so simple. They came in five common-sense categories: amphibians, birds, fish, mammals and reptiles. Birds were the winged and feathered ones, reptiles the scaly, ...

- a system of biological taxonomy based on the quantitative analysis of comparative data and used to reconstruct cladograms summarizing the (assumed) phylogenetic relations and evolutionary history of ...

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Cladistics is one way scientists classify organisms. A cladogram shows the nature of evolutionary relationships that may have occurred, similar to a family tree. You will make a cladogram in this ...