Authors Year Title
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.
Liang & Guo 1982 Cephalopoda.
Paleontological Atlas of East China. Volume of Late Paeozoic: 257-307, fig.1-90, pl.103-118; Beijing.