Ash, S.R., 1972, Late Triassic plants from the Chinle Formation in northeastern Arizona: Palaeontology, v. 15, p. 598-618.
Ash, S.R.
Palaeontology, v. 15, p. 598-618.
Paleontology, Fossil Plant, Paleoecology, Locale, Correlation, Chinle Fm - Triassic, Sonsela Sandstone Bed - Petrified Forest Mbr,
