| Publication Type: | Journal Article |
| Year of Publication: | 1984 |
| Authors: | A. Budd Foster |
| Journal: | Palaeontographica Americana |
| Volume: | 54 |
| Pagination: | 58–69 |
| URL: | http://archive.org/details/palaeontographic541984pale |
| Publication Type: | Journal Article |
| Year of Publication: | 1984 |
| Authors: | A. Budd Foster |
| Journal: | Palaeontographica Americana |
| Volume: | 54 |
| Pagination: | 58–69 |
| URL: | http://archive.org/details/palaeontographic541984pale |