The origin and relationships of early Chondrichthyes / Eileen D. Grogan, Richard Lund -- Historical zoogeography of the Selachii / John A. Musick, Melanie M. Harbin, Leonard J.V. Compagno -- Phylogeny of Batoidea / John D. McEachran, Neil Aschliman -- Phylogeny and classification of extant Holocephali / Dominique A. Didier -- Biomechanics of locomotion in sharks, rays, and chimeras / Cheryl A.D. Wilga, George V. Lauder -- Prey capture behavior and feeding mechanics of elasmobranchs / Philip J. Motta -- Metabolism, energetic demand, and endothermy / John K. Carlson, Kenneth J. Goldman, Christopher G. Lowe -- Food consumption and feeding habits / Bradley M. Wetherbee, Enric Cortés -- Homeostasis : osmoregulation, pH regulation, and nitrogen excretion / David H. Evans, Peter M. Piermarini, Keith P. Choe -- Reproductive biology of elasmobranchs / Jeffrey C. Carrier, Harold L. Pratt, Jr., José I. Castro -- Hormonal regulation of elasmobranch physiology / James Gelsleichter -- Sensory biology of elasmobranchs / Robert E. Hueter ... [et al.] -- The immune system of sharks, skates, and rays / Carl A. Luer, Catherine J. Walsh, Ashby B. Bodine -- Age determination and validation in chondrichthyan fishes / Gregor M. Cailliet, Kenneth J. Goldman -- Life history patterns, demography, and population dynamics / Enric Cortés -- Genetics of sharks, skates, and rays / Edward J. Heist -- Predator-prey interactions / Michael R. Heithaus -- Elasmobranchs as hosts of metazoan parasites / Janine N. Caira, Claire J. Healy -- Assessing habitat use and movement / Colin A. Simpfendorfer, Michelle R. Heupel