Authors Year Title
Landman, Polizzotto & Mapes 2006 Cameral membranses in prolecantid and goniatitid ammonoids from the Permian Arcturus Formation, Nevada, USA. [N.H. Landman, K. Polizzotto, R.J. Mapes & K. Tanabe].
Lethaia, 39: 365-379, 13 fig.
Miller & Parizek 1948 A Lower Permian ammonoid fauna from New Mexico.
Journal of Paleontology, 22 (3): 350-358, fig.1-4, pl.56-58; Tulsa,Oklahoma.
Miller & Furnish 1957b Permian ammonoids from Southern Arabia.
Journal of Paleontology, 31 (6): 1043-1051, fig.1-6, pl.131-132; Tulsa,Oklahoma.
Plummer & Scott 1937 Upper Paleozoic ammonites in Texas.
The geology of Texas, vol.3 pt.1, Bull. Texas. Univ., 3701: 1-516, fig.1-88, pl.1-41; Austin, Texas.
Smith 1903 The Carboniferous Ammonoids of America.
Monography, U.S. geological Survey, 42: 1-211, pl.1-29; Washington.
White 1891 The Texas Permian and its Mesozoic types of fossils.
Bulletin of the United States Geological Survey, No.77: 1-51, pl.1-4; Washington.