Introduction: Morphology, Shape and Phylogenetics, N. Macleod and P. Forey Homology, Characters and Continuous Variables, C.J. HumphriesQuantitative Characters, Phylogenies, and Morphometrics, J. Felsenstein Scaling, Polymorphism and Cladistic Analysis, T.C. Rae Overlapping Variables in Botanical Systems, G. Reid and K. SidwellComparability, Morphometrics and Phylogenetic Systematics, D.L. Swiderski, M.L. Zelditch, and W.L. Fink Phylogenetic Signals in Morphometric Data, N. MacleodCreases as Morphometric Characters, F.L. Bookstein Geometric Morphometrics and Phylogeny, F.J. Rohlf A Parametric Bootstrap Approach to the Detection of Phylogenetic Signals in Landmark Data, T.M. Cole III, S. Lele, and J.T. Richtsmeier Phylogenetic Tests for Differences in Shape and the Importance of Divergence Times: Eldredge's Enigma Explored, P.D. Polly Ancestral States and Evolutionary Rates of Continuous Characters, A.J. Webster and A. Purvis Modelling the Evolution of Continuously Varying Characters on Phylogenetic Trees: The Case of Hominid Cranial CapacitySummary