The first text to provide in-depth coverage of all the major cephalopod taxa from a paleobiological view, both extant and extinct, Paleobiology of Ammonoids and their Relatives summarizes the state of knowledge of paleobiology of this important group. This one-stop reference includes a number of key biological questions and debunks previously held wisdoms from more general invertebrate paleontological works. The text showcases the contributions that studies have made to macroevolution and palaeobiology, inspiring the next generation of paleontologists (students and practitioners) to explore the use of cephalopods as model organisms in their own studies.