|
Miller & Cline |
1934 |
The cephalopods of the Phosphoria Formation of Northwestern United States.
Journal of Paleontology, 8 (3): 281-302, fig.1, pl.39; Tulsa, Oklahoma.
|
|
|
Whidborne |
1890 |
A monograph of the Devonian fauna of the south of England. Part II. The fauna of the limestones of Lummaton, Wolborough, Chircombe Bridge, and Chudleigh.
Palaeontological Society, 43: 47-154, pl.5-15; London.
|