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| Author | : | Stephenson, L.W. |
| Year of publication | : | 1922 |
| Reference letter | : | a |
| Title | : | Some Upper Cretaceous shells of the rudistid group from Tamaulipas, Mexico. |
| Journal | : | Proceedings of the United States National Museum |
| Vol/No/Pages/Plates | : | 61: 1-28, 15 pls. |
| Published in | : | Washington, D.C. |