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Field, Katharine G.; And Others – Science, 1988
A rapid sequencing method for ribosomal RNA was applied to the resolution of evolutionary relationships among Metazoa. Describes the four groups (chordates, echinoderms, arthropods, and eucoelomate protostomes) that radiated from the coelomates. (TW)
Descriptors: Biology, Classification, College Science, Higher Education