Authors Year Title
Chernov 1939 Otryad Ammonoidea. Ammonei.
Atlas rukovodyashchikh form iskopaemykh faun SSSR, 6, Permskaya sistema: 160-190, fig.39-103, pl.41-45; Leningrad, Moskva.
Maksimova 1948 Ammonity iz nizhnei chasti shvagerinovykh sloev reki Yurezani.
Trudy Paleontologicheskogo Instituta Akademiia Nauk SSSR, 14 (4): 1-42, fig.1-23, pl.1-4; Moskva.
Miller & Furnish 1940c Permian ammonoids of the Guadalupe Mountain Region and adjacent areas.
Special Papers of the Geological Society of America, 26: 1-242, fig.1-59, pl.1-44; Baltimore.
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.
Ruzhencev 1933 O nekotorykh nizhnepermskikh ammonoideyakh Aktyubinskogo rayona.
Byulleten' Moskovskaya obshchestva ispytatelei prirody, otdelenie geologii, 11 (2): 164-180, fig.1-6, pl.4; Moskva.
Ruzhencev 1936 Paleontologicheskie zametki o kamennougol'nykh i permskikh ammoneiakh. [Paleontological remarks on Carboniferous and Permian ammonoids.]
Problemy sovetskoi geologii, 12: 1072-1088, fig.1-5; Moskva.
Ruzhencev 1938 Ammonei Sakmarskogo yarusa i ikh stratigraficheskoe znachenie.
Problemy Paleontologii, 4: 187-285, fig.1-19, pl.1-7; Moskva.
Ruzhencev 1951 Nizhnepermskie ammonity yuzhnogo Urala. 1.Ammonity Sakmarskogo Yarusa.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 33: 1-186, fig.1-62, phot.1-8, pl.1-15; Moskva.
Zhou 1987 First discovery of Asselian ammonoid fauna in China.
Acta Paleontologica Sinica, 26 (2): 130-148, fig.1-11, pl.1-6; Beijing.