No title - 1990
Theropods of Dry Mesa Quarry (Morrison Formation, Late Jurassic), Colorado, with emphasis on the osteology of Torvosaurus tanneri - 1991
Sphinctozoan and Inozoan Sponges from the Permian Reefs of South China - 1994
Sponges of the Permian Upper Capitan Limestone, Guadalupe Mountains, New Mexico and Texas - 1998