December 1997
A festschrift in honor of Marshall Lambert
Joseph H. Hartman
Marine ichnogenera within Torrejonian facies (Paleocene) of the Fort Union Formation, southeastern Montana
Edward S. Belt; John A. Diemer; Edward C. Beutner
Agonistic behavior in pachycephalosaurs (Ornithischia, Dinosauria); a new look at head-butting behavior
Kenneth Carpenter
Marine Upper Cretaceous rocks and their ammonite record along the northern flank of the Black Hills uplift, Montana, Wyoming, and South Dakota
William A. Cobban; Neal L. Larson
Trace fossils of the Fox Hills Formation, Bowman County, North Dakota
Daniel J. Daly
A North Dakota Triceratops skull
F. D. Holland
Mammals and mollusks across the Cretaceous-Tertiary boundary from Makoshika State Park and vicinity (Williston Basin), Montana
John P. Hunter; Joseph H. Hartman; David W. Krause
Paleoenvironmental distribution of Paleocene palynomorph assemblages from brackish water deposits in the Ludlow, Slope, and Cannonball formations, southwestern North Dakota
Timothy J. Kroeger; Joseph H. Hartman