This collection of case studies seeks to re-examine the understanding of the speciation patterns that appear in the fossil record through analysis of the patterns and their presumed processes. The contributions address the questions surrounding speciation in the fossil record by conducting very specific studies of particular lineages. In each case, the rigorous techniques of morphological analysis, quantitative genetic analysis, phylogenetic analysis, and sedimentary completeness have been employed. The new perspectives revealed in this volume should make it a useful resource for students, teachers, and professionals in the fields of paleontology and evolutionary biology. Rich with data and cogent examples of the speciation processes, this book should stand as a guide to greater understanding of the issues surrounding these processes.