Contributions from the Museum of Paleontology, Volume 6 edited by Eugene S. McCartney and published by the University of Michigan Press, Ann Arbor, Michigan, features groundbreaking research in paleontology. This volume includes notable articles such as E. C. Case's study on a nearly complete turtle skeleton from the Upper Cretaceous of Montana, Chester A. Arnold's descriptions of Lepidodendron johnsonii from the Lower Pennsylvanian of Central Colorado, and observations on fossil plants from the Devonian of Eastern North America. Further contributions include John Andrew Wilson's interpretation of the skull of Buettneria, G. M. Ehlers and W. E. Humphrey's revision of K. A. Strong's species from the Mississippian Point au Gres limestone, and Waldo E. Steidtmann's detailed examination of the anatomy and affinities of Medullosa noei. Archie MacAlpin presents a new polyodontid fish from the Upper Cretaceous of Montana with a discussion on allied fish, while David H. Swann explores the Favosites alpenensis lineage in the Middle Devonian Traverse Group of Michigan. The volume also includes a comprehensive catalog of type and figured specimens of vertebrate fossils in the Museum of Paleontology at the University of Michigan. This collection is an essential resource for paleontologists and researchers with a keen interest in the fossil record and evolutionary history.