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Nature 413, 121-122 (13 September 2001) | doi:10.1038/35093191
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Evolutionary biology: Sum of the arthropod parts
Mark Blaxter
Abstract
Being an arthropod, with an external skeleton and jointed limbs, is a good thing in evolutionary terms. But the question of how the main groups of arthropods are related remains a subject of intense debate.
Arthropods are everywhere: there are millions of species, each often occurring in astronomical numbers, and they inhabit every niche in the biosphere. The evolution of the phylum Arthropoda is a long-standing area of study, but the interrelationships of the main subphyla are still the subject of vigorous debate1.
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