Authors Year Title
Gordon 1965 Carboniferous Cephalopods of Arkansas.
Professional Papers, U.S. Geological Survey, 460: 1-322, fig.1-96, pl.1-32; Washington. [imprint 1964].
Miller 1947 A goniatite from the Mississippian Boone formation of Missouri.
L. Paleont., 21: 19-21, pl.10; Tulsa, Oklahoma.
Sheng 1983 The ammonoids of late Lower Carboniferous from Yongzhu village, Xainza district in North Xizang.
In: The Geology of the Qinghai-Xizang (Tibet) Plateau.-41-68, fig.1-20, pl.1-4; Beijing.
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.