M.A. Taylor, Foreword. -- Ichthyosauria: -- J.M. Callaway, Introduction. -- P.M. Sander, The paleobiogeography of Shastasaurus. -- J.M. Callaway, A New Look at Mixosaurus. -- C. McGowan, A Transitional Ichthyosaur Fauna. -- R. Motani, Temporal and Spatial Distribution of Tooth Implantation in Ichthyosaurs. -- Sauropterygia: -- O.C. Rieppel, Introduction. -- O.C. Rieppel and H. Hagdorn, Paleobiology of Middle Triassic Sauropterygia in Central and Western Europe. -- G.W. Storrs, Morphologic and Taxonomic Clarification of the Genus Plesiosaurus. -- K. Carpenter, Comparative Cranial Anatomy of Two North American Cretaceous Plesiosaurs. -- Testudines: -- E.L. Nicholls, Introduction. -- R. Hirayama, Distribution and Diversity of Cretaceous Chelonoids. -- D.K. Elliott, G.V. Irby, and J.H. Hutchison, Desmatochelys Iowa, a Marine Turtle from the Upper Cretaceous. -- R.T.J. Moody, The Paleogeography of Marine and Coastal Turtles of the North Atlantic and Trans-Saharan Regions. -- Mosasauridae: -- G.L. Bell, Jr., Introduction. -- G.L. Bell, Jr., Phylogenetic Revision of North American and Adriatic Mosasauridea. -- A. Sheldon, Ecological Implications of Mosasaur Bone Microstructure. -- Crocodylia: -- S. Hua and E. Buffetaut, Introduction. -- R.K. Denton, Jr., J.L. Dobie, and D.C. Parris, The Marine Crocodile, Hyposaurus, in North America. -- Faunas, Behavior, and Evolution: -- J.A. Massare, Introduction. -- S.G. Lucas, Marine Reptiles and Mesozoic Biochronology. -- Z. Gasparini and M. Fernandez, Tithonian Marine Reptiles of the Eastern Pacific. -- R. Collin and C.M. Janis, Morphological Constraints on Tetropod Feeding Mechanisms: Why Were There No Suspenion-Feeding Marine Reptiles? -- R.L. Carroll, Mesozoic Marine Reptiles as Models of Long Term, Large-Scale Evolutionary Phenomena. -- Subject Index.