A catalog of Upper Triassic plant megafossils of the western United States through 1988, in Lucas, S.G., and Hunt, A.P., eds., Dawn of the age of dinosaurs in the American Southwest

Ash, Sidney, 1989, A catalog of Upper Triassic plant megafossils of the western United States through 1988, in Lucas, S.G., and Hunt, A.P., eds., Dawn of the age of dinosaurs in the American Southwest: Albuquerque, New Mexico Museum of Natural History, p. 189-222.