Contributions, Museum of Paleontology. Univ. Michigan, 12: 113-173, fig.1-16, pl.1-7; Michigan.
Monography, U.S. geological Survey, 42: 1-211, pl.1-29; Washington.
| Authors | Year | Title | |
|---|---|---|---|
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Miller & Garner | 1955 |
Lower Mississippian cephalopods of Michigan. Part III. Ammonoids and summary.
Contributions, Museum of Paleontology. Univ. Michigan, 12: 113-173, fig.1-16, pl.1-7; Michigan.
|
|
|
Smith | 1903 |
The Carboniferous Ammonoids of America.
Monography, U.S. geological Survey, 42: 1-211, pl.1-29; Washington.
|