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Ramírez, M. J., J. A. Coddington, W. P. Maddison, P. E. Midford, L. Prendini, J. Miller, C. E. Griswold, G. Hormiga, P. Sierwald, N. Scharff, S. P. Benjamin, W. C. Wheeler. 2007. Linking of digital images to phylogenetic data matrices using a morphological ontology. Systematic Biology, 56, 283–294.
