Authors Year Title
Andrianov 1985 Permskie i nekotorye kamennougol'nye ammonoidei Severo-Vostoka Azii.
Novosibirsk Izdatel'stvo Nauka, Sibirskoe Otdelenie, 1985: 1-180, fig.1-54, pl.A,B,1-21; Novosibirsk.
Glenister & Furnish 1961 The Permian ammonoids of Australia.
Journal of Paleontology, 35 (4): 673-736, fig.1-17, pl.78-86; Tulsa,Oklahoma.
Glenister, Windle & Furnish 1973 Australasian Metalegoceratidae (Lower Permian ammonoids).
Journal of Paleontology, 47 (6): 1031-1043, fig.1-2, tab.1-2, pl.1-5; Tulsa,Okla.
Leonova, Mohd Shafeea Leman & Shi 1999 Discovery of an Early Permian (Late Sakmarian) ammonoid from Langkawi Island, Malaysia.
Alcheringa, 23: 277-281, 3 fig.
Liang 1982 Some Early Permian ammonoids from Jilin and Nei Monggol.
Acta Paleontologica Sinica, 21 (6): 645-658, fig.1-12, pl.1-3; Beijing.
Ruzhencev 1938 Ammonei Sakmarskogo yarusa i ikh stratigraficheskoe znachenie.
Problemy Paleontologii, 4: 187-285, fig.1-19, pl.1-7; Moskva.
Ruzhencev 1956 Nizhnepermskiye ammonity Yuzhnogo Urala. II. Ammonity Artinskogo yarusa.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 60: 1-275, fig.1-97, pl.1-39; Moskva.
Sheng & Liu 1983 Early Permian ammonites fauna from Jiajia area, Xizang (Tibet).
The geology of the Qinghai-Xizang (Tibet) Plateau: 237-252, fig.1-11, pl.20; Beijing.
Zhou 1989 Age of the Longyin Formation in Southwest Guizhou province.
Science in China (ser.B) 32: 1361-1370, 1 fig., 2 tabl., 1 pl.