No title - 1981
Aphelops and other Miocene vertebrates collected from the Tesque Formation (Espanola Basin, New Mexico) by the Wheeler Survey in 1873 - 1983
Protitanotherium (Mammalia, Perissodactyla) from the Eocene Baca Formation, west-central New Mexico - 1983
Taxonomic status of Oxyacodon tecumsae, a Paleocene mammal from the San Juan Basin, New Mexico - 1986
Leidyosuchus (Reptilia, Crocodilia) from the Paleocene Nacimiento Formation, San Juan Basin, New Mexico - 1986
A large nautiloid specimen from the San Andres Formation (Permian, Leonardian) near Cloudcroft, New Mexico, with a review of the nautiloids reported from the San Andres Formation - 1987
Late Triassic fauna from the Los Esteros Member of the Santa Rosa Formation, Santa Fe County, New Mexico, and its biochronological implications - 1988
No title - 1989
Paleontology and vertebrate biochronology of the Upper Triassic Garita Creek Formation, east-central New Mexico - 1989
No title - 1990
The oldest mammal - 1990