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Hall |
1879 |
Descriptions of the Gasteropoda, Pteropoda and Cephalopoda of the Upper Helderberg, Hamilton, Portage and Chemung Groups.
Paleontology of New York, 5 (2): 1-492, pl.1-113; Albany.
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House & Kirchgasser |
1993 |
Devonian goniatite biostratigraphy and timing of facies movements in the Frasnian of eastern North America.
In: Hailwood,E.A. & Kidd,R.B. (eds.), High Resolution Stratigraphy; Geological Society Special Publications, 70: 267-292, fig.1-13;
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Miller |
1938 |
Devonian ammonoids of America.
Special Papers, Geological Society of America, 14: 1-262, fig.1-41, pl.1-39; Baltimore.
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