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Stone description: argillaceous
| Wall Number Sort descending | Country | State | Classification | Source |
|---|---|---|---|---|
| 10Lb19 | United States | Pennsylvania | Sandstone | Stoop's Ferry |
| 10LB6 | United States | Missouri | Limestone | Clinton |
| 10LB7 | United States | Missouri | Limestone | Clinton |
| 11La14 | United States | Iowa | Limestone | Charles City |
| 12RA13 | United States | Ohio | Dolomite | Lima |
| 12RA23 | United States | Tennessee | Limestone | Nashville |
| 12rb12 | United States | Ohio | Dolomite | Bath Twp. Allen Co. |
| 14LA44 | Portugal | Limestone | Serra de Boa Viagem, Coimbra | |
| 14LA46 | Portugal | Limestone | Janianes, Coimbra | |
| 6RA2 | United States | Pennsylvania | Sandstone | Columbia |
| 7La2 | Portugal | Limestone | Porto Barrao, Coimbra | |
| 8La41 | United States | Mississippi | Sandstone | Rankin Co. |
| 8RA3 | Portugal | Limestone | Janianes, Coimbra | |
| 9LA28 | United States | New York | Sandstone | Warsaw |
| 9RB37 | United States | Oregon | Sandstone | Oakland |