Containing papers published between November 10, 1928, and April 9, 1932, features significant paleontological research. Edited by Eugene S. McCartney and published by the University of Michigan Press in 1932, this volume includes groundbreaking contributions such as E. C. Case's study on indications of a cotylosaur and a new form of fish from the Triassic beds of Texas, Aldred S. Warthin Jr.'s research on fossil fishes from the Triassic of Texas, and the collaborative work of Laurence M. Gould, Aug. F. Foerste, and Russell C. Hussey on the geology of Foxe Land, Baffin Island. Other notable entries include Russell C. Hussey's examination of cystoids from the Trenton Rocks of Michigan, E. C. Case's detailed description of the skeleton of Ostodolepis brevispinatus, and Aug. F. Foerste's studies on the color patterns of fossil cephalopods and brachiopods, as well as additional notes on nephritic erina. E. C. Case also provides insights into the lower jaw of Brachysuchus megalodon, arthrodiran remains from the Devonian of Michigan, limb movement patterns in phytosaurs, and the description of a new species of Buettneria. Chester A. Arnold discusses Calamites newberryi, while Charles F. Deiss offers a description and stratigraphic correlation of the Fenestellidae from the Devonian of Michigan. This volume is an invaluable resource for paleontologists and researchers interested in furthering their understanding of fossil organisms and geological history.