|
Spinosa, Furnish & Glenister |
1975 |
The Xenodiscidae, Permian ceratitoid ammonoids.
Journal of Paleontology, 49 (2): 239-283, fig.1-22, tab.1-5, pl.1-8.
|
|
|
White & Skorina |
2000 |
A Type Catalog of Fossil Invertebrates (Mollusca: Ammonoidea) in the Yale Peabody Museum.
Postilla 222, Peabody Museum of Natural History, Yale University, 1-73, New Haven, CT.
|
|
|
Zhou |
1987 |
Early Permian ammonoid-fauna from southeastern Hunan. [In Chinese, with English abstract].
In: Nanjing Institute of Geology and Paleontology,Academia Sinica, ed.,Collection of Postgraduate Theses, 1: 285-348,33 fig., 9 pl. (Jiangsu Sci. and Technol.Publ.House), Nanjing
|