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Peter wrote:- > Evolution is about morphologic change and adaptation to the environment. > The sorting of species into families based on their morphology is a very > useful tool. There is no need to have a constant number of species in a > family. I would add that there is no need to have a constant interpretation as to what a Family represents in terms of its relationship with other Families. Especially as we are not sure even whether species-level taxonomy is equivalent in either living or fossil organisms. Neil Neil Clark Curator of Palaeontology Hunterian Museum University of Glasgow email: NCLARK@museum.gla.ac.uk Mountains are found in erogenous zones. (Geological Howlers - ed. WDI Rolfe)
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